Accounting Firm Capacity Planning: Start With Review Hours

In the 2025 National MAP Survey, the top quartile of firms by net remaining per partner reported a median equity-partner utilization of 52.9%. Across all respondents, the median was 58.1%. The firms earning the most per partner are the firms whose partners bill a smaller share of their own time, while carrying nearly twice as many professionals behind them.

Here is why that shape exists. Your firm's capacity is the smaller of two numbers: the returns your people can prepare, and the returns you can review and sign. Accounting firm capacity planning built on billable hours computes the first number and never reaches the second.

Key takeaways

• Capacity is the minimum of preparation capacity and review capacity, not the sum of billable hours.
• Adding a preparer raises the first number and leaves the second untouched.
• In the 2025 MAP Survey, top-performing firms ran a leverage ratio of 5.78 billable professionals per equity partner, against a median of 3.00.
• 29% of responding firms offshore work, and on the broader measure of work "outsourced or completed by a global team" (a wider category than offshoring), 59% of respondents put it at only 1%-5% of their work.
• A Section 7216 consent must be signed before any tax return information reaches a tax return preparer outside the United States. You may condition the engagement on that consent, and on Form 1040-series consents it has to be the taxpayer's affirmative consent, never an opt-out.

What is accounting firm capacity planning?

Accounting firm capacity planning is the process of forecasting how much client work a firm can complete in a period, given the hours its people can supply, and then deciding in advance which work it will accept.

A complete plan produces four things: a count of committed work by type, an estimate of the hours each type consumes at each stage, a supply of available hours by grade, and a decision rule for what happens when demand exceeds supply. The fourth is the one that decides whether the first three were worth building.

The definition that matters for a firm where a partner signs the return has an extra term. Work is not complete when it is prepared. It is complete when someone with signing authority has reviewed it and put their name on it. A capacity plan that measures preparation and ignores review is measuring the wrong half of the job.

Why do most accounting firm capacity plans fail in April?

Because most capacity plans measure the supply of preparation hours, and preparation hours are rarely what runs out.

Five habits make that failure worse: planning reactively once the season has started, scheduling work in individual calendars instead of one place, underestimating non-billable time, distributing work unevenly across the team, and never making priorities explicit. Fix all five and you will run a calmer season.

You will still hit the same ceiling. Every one of those fixes improves how preparation hours are allocated. None of them adds an hour to the person who signs.

That is why the season ends with a partner reviewing returns at 11 p.m. while a junior sits with nothing urgent to do. The bottleneck moved to the one place the plan never modeled.

What actually sets your firm's capacity ceiling?

Your firm's capacity ceiling is whichever of two numbers is smaller: preparation capacity or review capacity. Preparation capacity is the returns your people can prepare. Review capacity is the returns the people authorized to review and sign can actually get through. You cannot know which one binds until you compute both, and only one of them is usually in the plan.

Two properties make review capacity the term that usually gives way first. It cannot be bought at the bottom of the market, because it lives with partners, directors and senior managers. And it is only a slice of what remains after everything else those people bill: client engagements, advisory work, the technical calls only they can take.

Nothing else in the firm has that shape. A preparer's credentials do not protect the firm's name. The review standing between a preparer's mistake and the signature does, and that review comes out of a pool of a few people.

The MAP Survey shows how thin the pool is. Across all respondents, equity partners record the lowest utilization of any grade in the survey apart from interns. Roughly two fifths of a partner's year is not chargeable at all, and final review has to fit inside the rest, alongside every engagement the partner personally bills.

How do you calculate your accounting firm's capacity?

Compute both terms, then take the smaller one. Five steps:

1. Count preparation supply. Billable professionals, times available hours each, times their utilization rate.
2. Convert it to returns. Divide by your own average preparation hours per return.
3. Count review supply. Reviewer available hours, times their utilization rate, times the share of that chargeable time they spend on final review.
4. Convert that to returns. Divide by your own average review minutes per return.
5. Take the minimum. That is your firm's capacity. The difference between the two is slack you are paying for and cannot use.

Step 3 is the one that stalls. If your practice-management system cannot answer "how many hours did this partner spend reviewing last April," you have found your first task.

A worked example, with placeholder inputs

Every input here is a placeholder. They are not benchmarks. Substitute your own, because hours per return, review minutes per return and the share of partner time that goes to final review are specific to your client mix and your standards.

Take a firm with two equity partners and six other billable professionals. Say each person has 2,200 available hours a year, the six run 66% chargeable utilization, and the two partners run 58%.

Preparation capacity. On those placeholder inputs, six professionals, 2,200 hours each, at 66% utilization, gives 8,712 chargeable hours. At 4.5 preparation hours per return, that is 1,936 returns.

Review capacity. Two partners, 2,200 hours each, at 58% utilization, gives 2,552 chargeable partner hours. Say a quarter of that goes to final review of returns, which is 638 hours. At 25 minutes of partner review per return, one review hour clears 2.4 returns, so 638 hours clears 1,531 returns.

The firm's capacity is 1,531 returns. The other 405 returns of preparation capacity exist, are paid for, and go nowhere.

Why a seventh preparer changes nothing

Add a seventh billable professional. On the same placeholder inputs, that is another 1,452 chargeable hours, another 323 returns of preparation capacity. Preparation capacity climbs to 2,259.

The firm still completes 1,531 returns. The slack grows from 405 to 728. You have bought a salary and a laptop and moved the queue.

Now spend the money on the second number. Two ways.

Move 100 hours of partner time from other chargeable work into review. Still on the placeholder inputs, review hours go from 638 to 738. At 2.4 returns per hour, capacity rises to 1,771 returns, a gain of 240. That is a real trade, not a free one. Those 100 hours came out of advisory or client work the partner was billing, and you should price the trade before you make it.

Or cut partner review from 25 minutes to 20 minutes per return. The same 638 hours now clear three returns each: 1,914 returns, a gain of 383. The seventh preparer delivered nothing.

Five minutes per return beat a seventh salary. Standardized workpapers, consistent file naming and a reviewer who never has to hunt for last year's comparison are where those minutes come from.

What do the AICPA's MAP benchmarks say about capacity?

The 2025 MAP Survey reports a median firm leverage ratio, defined as billable professionals divided by equity partners, of 3.00 across all respondents and 5.78 among top performers. The survey reads it as "an indication that top performers are more successful at delegation and potentially more efficient, scalable, and profitable."

Nearly double the professionals standing behind each partner. And those partners bill a smaller fraction of their time.

The survey defines top performers as the top quartile by net remaining per partner, so the profit gap between those firms and everyone else is a definition, not a discovery. The shape of those firms is not: more professionals per partner, and partners who charge less of their own time.

Utilization by grade tells the same story. Each figure is a fiscal-2024 median in the survey's top-performer comparison: the left column across all respondents, the right across the top 25% of firms by net remaining per partner. More than 1,400 firms answered at least some questions.

From associate to manager, top performers and everyone else sit within a point of each other. The gap opens at the top, and it opens in the direction most partners would call failure: at the most profitable firms, partners bill less.

Two caveats. First, these are medians in a cross-section, not a demonstrated cause, and the survey cautions that "many of these factors may be attributable to firm size." Second, confirm how your own system computes chargeable utilization before you plug the ratio into the model.

The firms that make the most money per partner are not the firms whose partners bill the largest share of their time. At those firms, whatever fills the other 47.1% of a partner's time appears to be worth more than another billable hour would be.

The survey also notes that median net client fee growth moderated to 6.7% from 9.1% in the prior edition. The prior edition rode a post-pandemic bounce; the AICPA reads the slowdown as reflecting several factors, among them firms evaluating their existing client base and weighing capacity as they take on new work. Capacity is on the list.

Should you hire, outsource, or raise prices?

The right move depends on which number is binding. Hiring buys preparation hours. Outsourcing buys prepared work. Raising prices or culling clients buys neither, and instead lowers the demand you have to meet. None of the three adds review hours to the person who signs.

A local hire is the right answer more often than a staffing company will tell you. The MAP Survey puts the median average initial salary for a fiscal-2024 new hire with a master's degree at $67,750 and a bachelor's at $60,834, before the loaded cost of employment. If that hire becomes a reviewer in four years, the salary bought review capacity, which nothing else on this list does.

Culling clients is ordinary practice. A majority of responding firms culled clients in fiscal 2024, fewer than in the prior edition, and the survey reads that easing as a sign the earlier rightsizing did its work.

Offshore capacity is the wrong answer in three situations. If your work is inconsistent, there is nothing stable to hand over. If your standards live only in a partner's head, no external team can meet them, and you will spend the season rewriting rather than reviewing. And if your bottleneck is review, adding offshore preparers alone reproduces the problem you already have, one time zone away.

That third case is the difference between buying preparation and buying review. A provider that reviews before delivery does not hand you review capacity, because signing authority never leaves your firm. What it changes is the number of minutes each return costs the partner who signs.

In one Accountably engagement, a regional CPA firm with 12 placements tripled its return volume, cut partner review time 60%, delivered 100% on time, saved roughly $420,000 a year, and made no in-house hires. Cost savings are the entry ticket; removing capacity as the ceiling on the firm is the reason offshore accounting and tax staffing for CPA firms exists.

How much of the profession actually offshores work?

29% of responding firms offshore work, Accounting Today reports from the AICPA's 2025 National MAP Survey, little changed from the prior edition. Among top performers the figure was 46%. It runs higher still at the largest firms.

The depth is the interesting part. The survey calls participation in these practices limited: 59% of respondents reported that only 1%-5% of their work is "outsourced or completed by a global team", and 25% put that figure between 6% and 15%. The proportion runs higher at larger firms. Among the firms involved, 72% used the vendor model rather than an employer-of-record arrangement or a wholly owned offshore facility, 65% offshored to India, and 33% to the Philippines.

The survey is direct about the motive: "firms primarily use outsourcing and offshoring to increase capacity, rather than as an alternative operating model."

Which service lines get sent out? Tax, overwhelmingly. The survey reports its service-line breakdown across the firms that outsource, a different population from the 29% that offshore.

Two things follow for your plan. First, the profession's use of these arrangements is shallow. Most respondents report that only 1%-5% of their work is outsourced or completed by a global team, and the survey reads that as supplementing capacity rather than changing the operating model. Whatever you start with will be small, and the data says small is ordinary. Second, offshoring individual tax work triggers a Section 7216 consent requirement with a hard lead time.

What does Section 7216 require before tax return information leaves your firm?

Consent. Signed and dated by the taxpayer, before the disclosure. Where the tax return preparer receiving the information is located outside the United States, the regulation is explicit: "the taxpayer's consent under § 301.7216-3 prior to any disclosure is required" (26 CFR § 301.7216-3(a)(3)(i)(D)). The same requirement reaches a colleague sitting in your own firm's office abroad (26 CFR § 301.7216-2(c)(2)). For Form 1040-series consents, Revenue Procedure 2013-14 § 5.04 restates that rule, adds a mandatory statement the consent form has to carry, and permits an electronic signature.

Section 7216 governs tax return information. Offshoring client accounting services or audit support is governed by other rules.

Four features of the consent rule put it on your calendar.

1. The consent comes first. "A taxpayer must provide written consent before a tax return preparer discloses or uses the taxpayer's tax return information" (26 CFR § 301.7216-3(b)(1)). No retroactive consent, no disclosure while the form is in the mail. The workflow has to sit inside your engagement-letter cycle, wherever that falls in your year.
2. You may condition the engagement on it. You may not take it by default. Conditioning services on a consent normally makes that consent involuntary. There is one exception, and this is it: when the disclosure goes to another preparer who assists in preparing the return, which is exactly what an offshore preparer does, a firm may "condition its provision of preparation services upon a taxpayer's consenting to disclosure" (26 CFR § 301.7216-3(a)(2)). The consent language the IRS prescribes for that context on Form 1040-series returns says so out loud: "we may decline to provide you with tax return preparation services or change the terms (including the cost) of the tax return preparation services that we provide to you if you do not sign this form." What you may not do is assume the answer. On a Form 1040-series consent, the form "must require the taxpayer's affirmative consent," and a form that makes the taxpayer deselect what they do not want, an opt-out consent, "is not permitted" (Revenue Procedure 2013-14 § 5.04). Some clients will still say no, and those returns stay in-house.
3. It expires. Where the taxpayer does not specify a duration, the consent is "effective for a period of one year from the date the taxpayer signed the consent" (26 CFR § 301.7216-3(b)(5)). Last season's consents may not cover this season.
4. Social Security numbers get a separate rule. On Form 1040-series returns, a US preparer generally may not even obtain consent to disclose the client's SSN to a preparer outside the United States, and "must redact or otherwise mask the taxpayer's SSN before the tax return information is disclosed outside of the United States." The single exception runs through an "adequate data protection safeguard" maintained by both preparers and verified in the request for the taxpayer's consent (26 CFR § 301.7216-3(b)(4)). Masking is the rule, and it is a systems change with a lead time.

Points 1 and 2 together are what change the arithmetic. A signed consent is a precondition you cannot manufacture, so your offshore preparation capacity is capped by signed consents, not by seats. If 30% of your 1040 clients decline, 30% of that book cannot be prepared offshore, whatever your vendor's seat count says. Forecast consent uptake from your own prior-year returns.

The penalties are why this earns a line on the plan. A preparer who "knowingly or recklessly" discloses tax return information is guilty of a misdemeanor and shall be "fined not more than $1,000 ... or imprisoned not more than 1 year, or both, together with the costs of prosecution" (26 U.S.C. § 7216).

Where the disclosure is one to which Section 6713(b) applies, that criminal fine rises to $100,000 (26 U.S.C. § 7216). Section 6713 adds a civil penalty of $250 for each disclosure, capped at $10,000 for a calendar year, rising to $1,000 for each disclosure and a $50,000 cap where the disclosure is made in connection with a crime relating to the misappropriation of another person's taxpayer identity (26 U.S.C. § 6713).

What should you ask any capacity partner?

Ask four questions before a single file moves, whether the capacity is offshore or domestic:

• Who obtains the consent, and when in the calendar does it happen?
• How does your workflow mask the SSN on Form 1040-series returns, or how is the adequate data protection safeguard met?
• Where is client data stored during preparation, and is anything written to a local machine?
• What security posture are you claiming, in the exact words you would use in a contract?

Ask that last one precisely. "Certified" and "aligned" are different claims, and a provider should be able to say which one it is making without reaching for a brochure.

Does capacity planning software solve this?

No. Software measures capacity; creating it is a decision.

You still need the software. Step 3 is impossible without a system that records review time separately from preparation time, and practice-management and workflow tools are how you get that input.

What software will not do is tell you that your review capacity is smaller than your preparation capacity, because it will report both as hours and let you add them together. That inference is yours to make.

What does an accounting firm capacity plan look like on paper?

A capacity plan looks like a dated calendar with five commitments on it. A spreadsheet of billable hours is only an input. Here is the shape, running backwards from the season.

1. September: measure. Pull last season's actuals. Preparation hours per return by type, review minutes per return by reviewer, and utilization by grade. If review time is not coded separately, fix the coding now so next year's plan has a real input.
2. October: compute both numbers. Preparation capacity, review capacity, and the minimum. Write down the slack. Decide the decision rule for the work that exceeds the ceiling: raise the fee, defer it, decline it, or add capacity.
3. November: run the consent workflow. Section 7216 consents go out with engagement letters, not after. Count the signatures. That count, not your vendor's seat count, is your offshore-eligible book.
4. December: ramp. Any external capacity needs training on your software and your SOPs before January. Run mock returns during the ramp so the team practices where nothing is at stake. Whoever you use, front-load the effort.
5. February and March: reforecast. Capacity planning is not a one-time exercise. Recompute the minimum every two weeks against actual completions. When review hours slip, the ceiling has already dropped.

Nothing on that list requires new software. Steps 1 and 2 require honesty about where your hours went.

Frequently asked questions

Should equity partners count as billable professionals when you compute leverage?

The MAP Survey defines the leverage ratio as billable professionals divided by equity partners, and it reports utilization for equity partners alongside every other grade. Whichever convention your system uses, apply it consistently to both terms of the capacity model. A partner counted as a preparer in one number and a reviewer in the other will inflate your ceiling twice.

What is the difference between short-term and long-term capacity planning?

Short-term planning allocates the capacity you already have across the returns you have already accepted, and it runs on a two-week reforecast during the season. Long-term planning changes the capacity itself: hiring, training a reviewer, standardizing workpapers, adding external capacity, or reshaping the client book. Short-term planning cannot raise your review capacity. Only the long-term decisions do.

Can a firm add review capacity without hiring a partner?

Review capacity is reviewer hours divided by review minutes per return, so there are three levers: move a reviewer's chargeable hours out of other billable work and into review, cut the minutes each return costs a reviewer through standardized workpapers and consistent naming, or train the next reviewer. The first two make the reviewers you have go further, and moving hours is a trade you should price before you make it. Only training the next reviewer, which is measured in years, actually adds one.

Does Section 7216 apply to bookkeeping or audit work sent offshore?

Section 7216 governs the disclosure and use of tax return information by tax return preparers. Client accounting services and audit support are governed by other rules, including your engagement letter, state board requirements and professional standards. Confirm the treatment of each service line separately before any file crosses a border.

Compute the second number before you hire

Preparation capacity is easy to buy and easy to measure, which is why every capacity plan is built on it. Review capacity is hard to buy and hard to measure, which is why it is the number that goes uncounted.

Pull your time data. Compute both. If review is the smaller number, then the next hire, the next tool and the next marketing push all land on the wrong side of the constraint, and the season will end exactly the way the last one did.

Accountably places trained offshore accountants and tax preparers inside US CPA, EA and accounting firms, ramped on your software and your SOPs in roughly three to four weeks. Every file passes preparer, senior, quality and final review before it reaches you: four sets of eyes before yours. Controls are SOC 2-aligned, with zero local storage. The signature, the opinion and the final judgment stay with your firm.

You sign; we make it signable. Since 2022 we have worked with 20+ US firms across 30+ placements. If a team member is not the right fit in the first 30 days, we replace them free, from our bench or recruited to your spec. That is our 30-Day Fit Guarantee.

The person designing your offshore team has sat in your seat, signed off on returns, and felt your April. That is a practitioner's judgment, built from doing the work.

If you're a firm carrying this volume, don't trust us. Test us. Run a Free 40-Hour Proof Pilot: a fixed 40-hour block of your own representative work, prepared on your SOPs and your software, then put through full multi-layer review, so your own reviewer grades real work and you can measure what a reviewed file costs you in partner minutes. Bring work you have consent to disclose.

The trial is free; the point is the proof, not a discount. Start the pilot.

This article is educational, not tax advice. Rules change, and states differ. Confirm thresholds, deadlines, and elections against the current IRS instructions for your year and facts.

Sources

• Private Companies Practice Section and CPA.com, 2025 National Management of an Accounting Practice (MAP) Survey Executive Summary (2025, fiscal 2024 data; more than 1,400 firms answered at least some questions and 1,073 completed the survey), full text, PDF, copy hosted by the Indiana CPA Society.
• Internal Revenue Service, Rev. Proc. 2013-14 (2013, PDF; scoped by its own section 4 to taxpayers filing a return in the Form 1040 series)
• 26 CFR § 301.7216-2, Permissible disclosures or uses without consent of the taxpayer (eCFR)
• 26 CFR § 301.7216-3, Disclosure or use permitted only with the taxpayer's consent (eCFR)
• 26 U.S. Code § 7216, Disclosure or use of information by preparers of returns (U.S. Government Publishing Office)
• 26 U.S. Code § 6713, Disclosure or use of information by preparers of returns (U.S. Government Publishing Office)