Blog › ICP guides

Tax attorney on retainer: domestic tax advisory, international tax advisory, and IRS audit defense on monthly retainer

August 6, 2026 · ~22 min read

A mid-stage software company has been claiming the federal research and development tax credit under 26 U.S.C. §41 for three tax years, based on a credit study prepared by its accounting firm that identified approximately $1.8 million in qualified research expenses (QREs) and generated a gross credit of $360,000. The company is notified that its federal income tax return is under examination by the IRS Large Business and International Division, and the examination agent’s initial document request includes a comprehensive request for all documentation supporting the company’s R&D credit claim, including project-by-project descriptions of the qualified research activities, contemporaneous time records for each employee included in the QRE calculation, and all contracts with third-party contractors whose costs were included in the credit claim. The company’s outside accounting firm advises that the credit study was prepared based on annual interviews with engineering managers and a sampling methodology that allocated 70% of the engineering department’s W-2 wages to qualified research without individual time tracking records for each engineer.

The company engages a tax attorney to manage the IRS examination. The attorney’s review of the credit study and the available documentation identifies a significant problem: Treasury Regulation §1.41-4(d) requires that the taxpayer maintain records in sufficient detail to establish that an employee actually performed qualified research, and the Third Circuit in Suder v. Commissioner and the Tax Court in multiple cases following the IRS’s Coordinated Issue Paper on R&D credits have required contemporaneous time records (timesheets, project logs, or similar records created during the research period) rather than estimates or reconstructions prepared at year-end or in preparation for an examination. The company’s audited credit claim is based largely on reconstructed estimates, not contemporaneous records. The attorney advises that the examination will likely result in a substantial disallowance of the R&D credit for the years under examination unless the company can produce documentation that contemporaneously connects each engineer’s time to specific qualified research projects.

Tax attorneys on monthly retainer — J.D.s specializing in federal and state taxation, often holding LL.M. degrees in Taxation from programs like New York University, Georgetown, or the University of Florida — do a substantial share of their highest-value advisory work between IRS notices, tax filing deadlines, and cross-border transaction closings. This guide covers domestic tax advisory, international tax advisory, and IRS audit defense: the legal frameworks behind each service area, the specific IRC provisions and Treasury Regulations that govern the advisory, and how to structure a retainer agreement that makes the ongoing tax advisory work visible between tax filing and enforcement milestones.

Domestic tax advisory

Domestic tax advisory is the retainer function that advises on federal and state income tax issues arising from the client’s business operations, transactions, and compensation arrangements: R&D tax credit substantiation and documentation, executive compensation deductibility under §162(m) and §280G, nonqualified deferred compensation compliance under §409A, IRS examination defense, and tax controversy resolution through the IRS Appeals process and the U.S. Tax Court.

Research and development tax credit advisory under 26 U.S.C. §41

The research and development tax credit under §41 provides a credit against federal income tax liability for qualified research expenses incurred in carrying on a trade or business. The credit is calculated as a percentage of the excess of the current year’s qualified research expenses over a base amount calculated from the taxpayer’s historical research expense intensity. Two credit calculation methods are available: the regular credit method under §41(a), which calculates the credit as 20% of qualified research expenses exceeding a base amount derived from the taxpayer’s gross receipts and fixed-base percentage; and the Alternative Simplified Credit (ASC) method under §41(c)(5), which calculates the credit as 14% of qualified research expenses exceeding 50% of the average qualified research expenses for the three preceding taxable years. The ASC method is more commonly used by growing technology companies because it eliminates the need to reconstruct the taxpayer’s historical research expense intensity back to the 1984-1988 base period.

The four-part qualified research test under §41(d) requires that each research activity satisfy all four elements: (1) the research must be undertaken to discover information that is technological in nature (applying principles of the physical or biological sciences, engineering, or computer science); (2) the research must be undertaken for the purpose of developing a new or improved business component (a product, process, technique, formula, invention, or computer software); (3) substantially all of the research activities must constitute elements of a process of experimentation (systematic trial and error, testing of hypotheses, or other methods of identifying and evaluating alternatives); and (4) the research must relate to a new or improved function, performance, reliability, or quality of the business component. Activities that are excluded from qualified research under §41(d)(4) include research conducted after commercial production begins, surveys or studies, research in the social sciences, arts, or humanities, computer software developed for internal use only (with exceptions for software developed as a primary business activity), and research funded by grants, contracts, or other third-party arrangements.

Qualified research expense documentation requirements under Treasury Regulation §1.41-4(d) are the most practically significant issue in IRS R&D credit examinations. The regulation requires that the taxpayer maintain records in sufficient detail to establish that expenditures were paid or incurred for qualified research, that the amounts paid or incurred for qualified research can be identified. The retained tax attorney advising on R&D credit documentation develops a contemporaneous documentation protocol that captures, for each engineer or researcher allocated to qualified research activities: the specific projects to which the employee’s time was allocated, the qualified research activities performed in connection with each project, the time spent on each activity, and the connection between the activities and the four-part qualified research test. The protocol typically includes a timekeeping system that distinguishes between time allocated to qualified research projects, time allocated to non-qualified activities (maintenance, internal use software outside the §41(d)(4)(E) exception, commercial production activities), and time allocated to non-research business activities.

Executive compensation advisory: §162(m), §280G, and §409A

Executive compensation advisory covers three distinct areas of federal tax law that impose significant restrictions on the deductibility and timing of compensation paid to executive officers: the §162(m) deductibility cap for compensation paid by publicly held corporations, the §280G excise tax on parachute payments made in connection with a change in control, and the §409A compliance requirements for nonqualified deferred compensation plans.

Section 162(m) advisory covers the limitation on the deduction for compensation paid to covered employees of publicly held corporations. Since the Tax Cuts and Jobs Act of 2017 eliminated the performance-based compensation exception (which previously excluded compensation paid pursuant to a qualifying performance-based plan from the $1 million deductibility cap), §162(m) now limits the deduction for all compensation paid to the CEO, CFO, the three other highest-paid executive officers, and any person who was a covered employee in any prior taxable year beginning on or after January 1, 2017, to $1 million per covered employee per taxable year, with no exception for performance-based compensation. The retained tax attorney advising on §162(m) evaluates the compensation arrangements for the corporation’s covered employees, identifies which compensation components will be non-deductible under §162(m) in the current and projected future years, and advises on whether pre-2018 grandfathered compensation arrangements (written binding contracts in effect on November 2, 2017 that have not been materially modified since that date) continue to qualify for the pre-TCJA performance-based exception.

Section 280G analysis addresses the federal excise tax on excess parachute payments made to disqualified individuals (officers, directors, highly compensated employees, and more-than-1% shareholders of a corporation) in connection with a change in ownership or control. A parachute payment is any payment in the nature of compensation that is contingent on a change in ownership or control; the aggregate excess parachute payments (parachute payments exceeding one times the individual’s base amount, which is the average annual compensation for the five years preceding the change in control) are subject to a 20% excise tax under §4999, and the corporation loses its deduction for the excess parachute payments under §280G. The retained tax attorney advising on §280G begins the parachute payment analysis six to twelve months before an anticipated change in control transaction: identifying which executives are disqualified individuals, calculating each individual’s base amount, identifying all parachute payments (cash severance, accelerated equity vesting, enhanced benefits, and any other compensation contingent on the change in control), and advising on whether the aggregate parachute payments for any individual exceed the three-times-base-amount threshold that triggers the excise tax and deduction disallowance.

Section 409A compliance advisory addresses the federal income tax rules governing nonqualified deferred compensation plans, which are arrangements that promise to pay compensation to an employee or service provider in a year after the year in which it is earned. A plan that fails to comply with §409A’s requirements for permissible deferral elections, permissible payment triggers, and restrictions on acceleration of deferred amounts causes the entire amount deferred under the plan (for all years of noncompliance) to become immediately includable in the employee’s gross income, subject to a 20% additional excise tax under §409A(a)(1)(B), and subject to underpayment interest on the deferred amount plus 1% interest under §409A(a)(1)(B)(ii). The retained tax attorney reviewing a §409A plan analyzes the plan’s deferral election provisions (initial deferral elections must be made before the first day of the taxable year in which the compensation is earned, with specific exceptions for new employees, first-year participants, and performance-based compensation elections made at least six months before the end of the performance period), the permissible payment events (separation from service, disability, death, a fixed time or schedule, a change in control as defined in Treasury Regulation §1.409A-3(i)(5), and an unforeseeable emergency), and the six-month delay rule for specified employees (key employees of publicly traded companies must wait six months after separation from service before receiving separation pay deferred under §409A).

IRS audit defense and tax controversy resolution

IRS audit defense begins when the IRS issues an examination notice (typically Form 4564 Information Document Request or a Letter 2205 notification of audit) and continues through the IRS Appeals process and, if necessary, Tax Court or federal district court litigation. The retained tax attorney managing an IRS examination develops an examination strategy that addresses the IRS agent’s information document requests, coordinates the client’s production of documents and information, manages the scheduling of interviews of the client’s employees and accountants, and evaluates the strength of the IRS’s proposed adjustments as they are communicated during the examination.

IRS notice of deficiency response under 26 U.S.C. §6212 is the formal IRS action that asserts a tax deficiency following an examination and triggers the taxpayer’s right to petition the U.S. Tax Court. The taxpayer must file a petition with the Tax Court within 90 days of the date of the notice of deficiency (150 days if the notice is addressed to a person outside the United States) to avoid the deficiency becoming final and collectible. The retained attorney responding to a notice of deficiency evaluates whether the proposed deficiency is correct or incorrect, advises on the probability of success in Tax Court litigation versus the probability of a favorable settlement with the IRS Office of Appeals before the Tax Court docket is set for trial, and coordinates the preparation of a Tax Court petition if litigation is recommended. The IRS Office of Appeals is a separate function from the IRS examination function, and taxpayers who request an Appeals conference after the examination is concluded receive a de novo review of the IRS’s proposed deficiency by an Appeals officer who evaluates the strength of each party’s position and the probability of each party prevailing at trial.

Closing agreement advisory under 26 U.S.C. §7121 allows the IRS and the taxpayer to enter into a final and conclusive agreement that resolves a specific tax issue or liability for a defined taxable period. Closing agreements are appropriate where the taxpayer has disclosed a tax compliance issue, corrected the issue prospectively, and seeks certainty that the IRS will not reopen the issue for the closed period. The retained attorney negotiating a closing agreement with the IRS evaluates what the taxpayer is seeking to close (a specific issue, a specific liability, or all tax issues for a period), what the IRS is willing to close in exchange for the taxpayer’s concession on other issues, and whether the closing agreement’s penalty structure is appropriate given the taxpayer’s compliance history.

International tax advisory

International tax advisory is the retainer function that manages the tax consequences of the client’s cross-border operations and transactions: transfer pricing analysis and documentation for intercompany transactions, GILTI planning to minimize the effective tax rate on foreign income under §951A, and FBAR and FATCA compliance reporting for foreign financial accounts and assets held by U.S. persons.

Transfer pricing advisory under 26 U.S.C. §482 and OECD Transfer Pricing Guidelines

Transfer pricing is the pricing of transactions between related parties (a domestic parent corporation and its foreign subsidiaries, for example) that affects the allocation of taxable income between different tax jurisdictions. Section 482 of the Internal Revenue Code gives the IRS authority to reallocate income, deductions, and credits between related parties to clearly reflect the income of each party. The arm’s length standard — the fundamental principle of transfer pricing under §482 and the OECD Transfer Pricing Guidelines adopted by the G20 countries — requires that intercompany transactions be priced as if the parties were uncontrolled (unrelated) parties dealing at arm’s length in comparable circumstances.

Transfer pricing method selection under Treasury Regulation §1.482 and the OECD Transfer Pricing Guidelines requires the retained attorney to identify the most appropriate method for pricing each category of intercompany transaction. The principal transfer pricing methods available under Reg. §1.482-3 through 1.482-5 are: the Comparable Uncontrolled Price (CUP) method, which compares the price in the controlled transaction to the price in a comparable uncontrolled transaction between unrelated parties (the most reliable method when a comparable transaction can be identified); the Cost Plus method, which sets the intercompany price at the tested party’s cost of goods sold plus an appropriate gross profit markup (appropriate for manufacturers or assemblers in controlled production transactions); the Resale Price method, which sets the intercompany price at the resale price to an unrelated party minus an appropriate gross profit margin (appropriate for distributors in controlled distribution transactions); the Comparable Profits Method (CPM) under Reg. §1.482-5 and the Transactional Net Margin Method (TNMM) under the OECD Guidelines, which evaluate the net profit margin earned by the tested party in the controlled transaction relative to a set of comparable uncontrolled transactions; and the Profit Split method, which splits the combined profit from a controlled transaction between related parties based on their relative contributions (appropriate for integrated transactions where both parties contribute significant non-routine intangible assets and neither party can be designated as the tested party).

Transfer pricing documentation requirements under Treasury Regulation §1.6662-6(d)(2)(iii)(B) require that taxpayers with intercompany transactions maintain contemporaneous documentation that is sufficient to support the arm’s length nature of the intercompany prices. The documentation must include: a description of the business and the industry; a description of the controlled transactions; a description of the method selected and the reason it was selected as the best method; a description of the alternative methods considered and the reason each was rejected; a description of the controlled taxpayer’s comparables search process and the results of that search; and an explanation of how the selected method was applied. The documentation penalty under §6662(e) applies a 20% penalty to the tax underpayment attributable to a transfer pricing adjustment where the taxpayer did not maintain contemporaneous documentation that adequately supports the transfer pricing method used; the penalty is increased to 40% for a gross valuation misstatement where the transfer price for any property or service is 200% or more (or 50% or less) of the correct arm’s length price.

GILTI planning under 26 U.S.C. §951A

The Global Intangible Low-Taxed Income (GILTI) provisions enacted by the Tax Cuts and Jobs Act of 2017 require U.S. shareholders of controlled foreign corporations (CFCs) to include in their gross income each year their pro-rata share of the CFC’s GILTI, which is the CFC’s net CFC tested income for the year exceeding 10% of the CFC’s qualified business asset investment (QBAI) in depreciable tangible assets. The GILTI inclusion effectively imposes a minimum U.S. federal income tax on a U.S. corporation’s share of its CFCs’ net income above a routine return on tangible assets, regardless of whether the income was distributed to the U.S. parent.

GILTI tested income and tested loss calculation requires the retained attorney to calculate each CFC’s tested income (gross income derived from CFC operations less allocable deductions, excluding Subpart F income under §951(a), income effectively connected with a U.S. trade or business, income from transactions with related U.S. persons in certain high-tax categories, foreign oil and gas extraction income, and dividends received from related parties) and the CFC’s QBAI (the average of the CFC’s adjusted basis in depreciable property used in the CFC’s trade or business at the close of each quarter of the CFC’s taxable year). The GILTI inclusion for the U.S. shareholder is the aggregate net CFC tested income (tested income minus tested loss across all CFCs) minus 10% of aggregate QBAI (the net deemed tangible income return).

Section 250 deduction optimization for domestic corporations allows a deduction equal to 50% of the domestic corporation’s GILTI inclusion (net GILTI plus the §78 gross-up for deemed-paid foreign tax credits) in taxable years ending before December 31, 2025, and 37.5% thereafter under the pre-TCJA sunset provisions (subject to potential legislative modification). The §250 deduction effectively reduces the corporate tax rate on GILTI from the 21% statutory rate to 10.5% before foreign tax credits (13.125% after the 2025 deduction reduction). The retained attorney advising on GILTI planning evaluates whether the effective tax rate on each CFC’s income is above or below the 10.5% GILTI effective tax rate (after the §250 deduction), whether the high-tax exclusion election under Reg. §1.951A-2(c)(6) (excluding CFC income subject to foreign income tax at a rate exceeding 18.9% from the GILTI inclusion) is beneficial given the client’s CFC portfolio, and whether restructuring the CFC’s tangible asset base or reorganizing the CFC structure can reduce the GILTI inclusion by increasing QBAI or reducing tested income.

FBAR and FATCA compliance advisory

FBAR (Foreign Bank Account Report) filing requirements under the Bank Secrecy Act and its implementing regulation at 31 CFR Part 1010 require U.S. persons (citizens, residents, and entities formed under U.S. law) who have a financial interest in or signature authority over one or more foreign financial accounts to file FinCEN Form 114 (FBAR) for any calendar year in which the aggregate value of all foreign financial accounts exceeded $10,000 at any time during the year. The FBAR must be filed electronically with the Financial Crimes Enforcement Network (FinCEN) by April 15 of the calendar year following the reportable year, with an automatic extension to October 15. Failure to file a required FBAR subjects the U.S. person to civil penalties of up to $10,000 per year for non-willful violations and the greater of $100,000 or 50% of the balance in the foreign financial account per year for willful violations, plus potential criminal penalties of up to 10 years imprisonment for willful violations.

FATCA reporting under 26 U.S.C. §6038D requires U.S. individuals with interests in specified foreign financial assets (including foreign bank accounts, stocks or securities issued by foreign corporations, interests in foreign financial instruments, and interests in foreign entities) exceeding the applicable reporting threshold ($50,000 on the last day of the taxable year or $75,000 at any time during the taxable year, with higher thresholds for married taxpayers filing jointly and U.S. persons living abroad) to attach Form 8938 to their federal income tax return. The FATCA filing obligation is separate from and in addition to the FBAR obligation; a taxpayer with foreign financial accounts may be required to file both FinCEN Form 114 and Form 8938 for the same accounts. Penalties for failure to disclose on Form 8938 are $10,000 per failure, with an additional $10,000 for each 30-day period during which the failure continues after IRS notification, up to a maximum of $50,000 per year. The retained attorney advising on FBAR and FATCA compliance evaluates the U.S. person’s foreign financial account holdings, determines the applicable reporting thresholds, advises on the differences in coverage between the FBAR and FATCA reporting obligations (FBAR covers accounts at financial institutions; FATCA covers a broader range of specified foreign financial assets including interests in foreign entities), and advises on voluntary disclosure options for U.S. persons who have failed to file previously required FBARs or Form 8938 disclosures.

Voluntary disclosure strategy for U.S. persons with unreported foreign financial accounts evaluates four compliance paths: (1) the IRS Streamlined Domestic Offshore Procedures, available to U.S. residents whose FBAR non-compliance was non-willful, requiring filing of amended or original returns for the three most recent taxable years, FBARs for the six most recent years, and payment of a 5% miscellaneous offshore penalty on the highest aggregate balance of unreported foreign financial assets during the covered period; (2) the IRS Streamlined Foreign Offshore Procedures, available to U.S. citizens and permanent residents residing outside the U.S. for at least 330 days in any one of the three most recent taxable years, requiring the same amended return and FBAR filing with no penalty; (3) the Delinquent FBAR Submission Procedures, available to taxpayers who have no unreported income from their foreign financial accounts and have not been contacted by the IRS, allowing late FBARs to be filed with a reasonable cause statement; and (4) the IRS Criminal Investigation Voluntary Disclosure Practice (formerly the Offshore Voluntary Disclosure Program), available to taxpayers with potential criminal exposure from willful FBAR non-compliance and unreported foreign income, providing a path to civil resolution of criminal tax exposure through cooperation with the IRS and payment of all back taxes, penalties, and interest.

Structuring a tax attorney retainer for visibility

Tax attorney retainer work is deadline-intensive and matter-specific: Tax Court petition deadlines fall exactly 90 days from the notice of deficiency mailing date with no extensions permitted, FBAR filing deadlines fall on April 15 with an automatic extension to October 15, §409A initial deferral elections must be made before the first day of the taxable year in which the compensation is earned, transfer pricing documentation must be contemporaneous (prepared before the tax return is filed for the year to which it relates), and R&D credit substantiation documentation is most valuable when it is created contemporaneously with the research activities rather than reconstructed at examination time. Each of these advisory tasks produces a discrete finding — the §41(d) qualified research test is satisfied for the ML Pipeline project, the GILTI high-tax exclusion election saves $180,000 in tax for the current year, the proposed IRS deficiency overstates the transfer pricing adjustment by $1.2 million, the FBAR streamlined disclosure covers six years of unreported Swiss accounts — but the finding is invisible to the client’s CFO and finance team unless it is captured in a work log entry that connects the advisory task to the specific IRC provision or Treasury Regulation, the tax period at issue, and the recommended tax position or compliance action.

The most effective tax attorney retainer structures pair a defined monthly advisory scope (which open tax years and matters are in scope for IRS examination representation, whether ongoing R&D credit substantiation advisory is included in the monthly fee or billed separately, whether transfer pricing documentation is billed as a fixed-fee annual project engagement or included in the retainer) with a shared work log that gives the client’s CFO and finance team a running record of the tax advisory activity between IRS examination milestones, tax filing deadlines, and cross-border transaction closings. The work log serves as both the primary deliverable for the ongoing tax advisory function and as the supporting documentation for the more visible discrete deliverables — the IRS examination response, the Tax Court petition, the transfer pricing documentation study, the R&D credit calculation, the FBAR and FATCA compliance filings, the §280G analysis — that the retained attorney produces when tax filing or enforcement deadlines require action.

Tax attorneys on retainer who maintain detailed, matter-specific work logs — capturing the specific §41(d) qualified research analysis, the transfer pricing comparables selection and method application, the §409A plan compliance review, the GILTI high-tax exclusion analysis, and the FBAR voluntary disclosure strategy evaluation for each advisory task — give their corporate and individual clients a tax advisory record that demonstrates the ongoing nature of the compliance and controversy advisory relationship and the specific IRC provisions and Treasury Regulations maintained between tax filing dates and IRS examination inquiries. HourTab gives tax counsel a shareable, public-facing retainer dashboard where clients can see the current month’s advisory hours, the running work log with matter-specific and project-specific entries, and the retainer progress bar — all without a client login or a separate portal. The retainer’s value is visible in the work log, not just in the tax filings and examination outcomes that the ongoing tax advisory is designed to achieve.

Frequently asked questions

What does a tax attorney on retainer typically do?

A tax attorney on monthly retainer provides ongoing advisory across domestic tax advisory (IRS audit defense and examination representation, R&D tax credit substantiation and documentation under §41, executive compensation advisory covering §162(m) deductibility, §280G golden parachute excise tax analysis, and §409A nonqualified deferred compensation compliance), international tax advisory (transfer pricing analysis under §482 and OECD Transfer Pricing Guidelines, GILTI planning under §951A including §250 deduction optimization and high-tax exclusion election, and FBAR/FATCA compliance advisory for foreign financial accounts and specified foreign financial assets), and tax controversy and dispute resolution advisory (IRS Appeals conference strategy, Tax Court petition preparation, and closing agreement negotiation under §7121). See the FAQ section above for a detailed breakdown of each service area.

What tax advisory work is most commonly underlogged?

The most systematically underlogged categories are R&D tax credit contemporaneous documentation advisory (quarterly project-level qualified research analysis under the §41(d) four-part test and QRE categorization by expense type), §409A compliance advisory for nonqualified deferred compensation plans (deferral election timing, permissible payment event analysis, six-month delay rule for specified employees), transfer pricing documentation preparation for intercompany transactions (contemporaneous functional analysis, comparables search, and method selection documentation to avoid the §6662(e) transfer pricing penalty), and FBAR/FATCA voluntary disclosure strategy advisory (Streamlined Domestic vs. Foreign Offshore Procedures vs. Delinquent FBAR Submission Procedures vs. Criminal Investigation Voluntary Disclosure Practice) — each of which produces no visible deliverable to the client’s finance team unless captured in a detailed work log entry with the specific IRC provision, Treasury Regulation, or FinCEN regulation applied and the recommended tax position or compliance action.

What should a tax attorney retainer agreement include?

Tax attorney retainer agreements should specify the services covered (domestic tax advisory, international tax advisory, IRS examination representation, Tax Court litigation, or a defined combination), the applicable legal frameworks (Internal Revenue Code; Treasury Regulations; IRS Revenue Procedures and Revenue Rulings; OECD Transfer Pricing Guidelines; FinCEN FBAR regulations 31 CFR Part 1010; FATCA regulations 26 CFR Part 1 §§1.1471-1.1474), the deliverables format (IRS examination response memos, R&D credit documentation protocols, §409A compliance memos, transfer pricing studies, GILTI analyses, FBAR/FATCA compliance calendars, Tax Court petitions), and the work log format. Monthly retainer amounts typically range from $4,000 to $20,000 per month for standard domestic and international tax advisory, increasing during active IRS examinations or Tax Court proceedings.

What are typical retainer rates for tax attorneys?

Tax associates and counsel with 3 to 7 years of domestic tax planning, IRS controversy, or international tax experience typically bill at $325 to $525 per hour. Senior tax attorneys and tax partners with 8 or more years of experience in complex tax transactions, international tax structuring, transfer pricing, or Tax Court litigation typically bill at $475 to $850 per hour. Former IRS trial attorneys and Appeals officers, and tax attorneys with LL.M. degrees from top tax programs, command rates at the top of these ranges. Monthly retainer amounts typically range from $4,000 to $20,000 per month for standard advisory; IRS examination representation and Tax Court litigation retainers range from $10,000 to $100,000 or more per month during active phases.

How should tax attorney retainer hours be logged?

Tax attorney retainer work log entries should capture the tax matter or return period, the specific advisory task, the IRC provision or Treasury Regulation applied, and the finding or recommended tax position. Entries that identify the specific §41(d) qualified research analysis per project, the QRE categorization by expense type, the transfer pricing comparables selection and method application, the GILTI tested income and high-tax exclusion analysis, and the FBAR voluntary disclosure strategy evaluated transform the tax retainer from a series of annual return filings into a documented ongoing tax advisory record between filing deadlines and IRS examination inquiries.