Busy season staffing for accounting firms starts with the gap between expected hours of work and the hours current staff can give each week. Turn that gap into headcount, hire seasonal help for work that is not return preparation, onboard them in two weeks before the rush, and set workload limits that keep everyone from burning out by April.
How many seasonal staff should a firm add?
The number of seasonal staff a firm should add is the weekly hours gap at peak divided by the hours one seasonal person can work, adjusted for how long new people take to get up to speed. The gap comes from comparing expected work with available staff hours, week by week, not from last year's headcount.
The capacity side of this, estimating returns and hours per week, has its own method. The guide to comparing return demand with staff hours by week walks through it. This section starts once the firm knows its gap.
Turning the gap into headcount
Look at the gap by type of work, not only in total. A shortfall of 60 hours a week in preparation and review needs people who can prepare and review. A shortfall of 60 hours in intake, scanning and client follow-up needs someone quite different, and that person is easier to find.
Then divide by realistic hours. A seasonal hire who works 25 hours a week is not 25 productive hours in the first two weeks. Plan on less while they learn, and count the time existing staff spend teaching them.
A worked example with invented numbers
This example uses made-up figures for a fictional firm, Pell & Okafor Tax, to show the arithmetic. None of the numbers describe a real firm or a typical one.
In the example, the firm's capacity plan shows a peak-week gap of 72 hours: 30 hours of preparation and review, and 42 hours of intake, document sorting and client follow-up. The firm decides to cover preparation through overtime limits and one returning seasonal preparer at 30 hours a week. For the 42 hours of support work, it plans two seasonal assistants at 25 hours each, or 50 hours. The extra 8 hours allow for the slower first weeks and for the teaching time the assistants will take from staff.
Staffing to the peak week can leave people idle in early February. The example firm staggers start dates, so one assistant begins in late January and the second in mid-February, as volume builds.
Seasonal staff roles that do not need a preparer license
Seasonal staff roles that do not need a preparer credential are the jobs around a return rather than the return itself: client intake, scanning and sorting documents, tracking missing items, scheduling, answering routine calls and billing. These roles take real hours off preparers. Where a role crosses into preparing returns, federal identification rules apply.
The line matters because of the IRS rule on preparer tax identification numbers (PTINs). The IRS page on PTIN requirements for tax return preparers says that "Anyone who prepares or assists in preparing federal tax returns for compensation" must have a valid PTIN. Whether a particular seasonal job counts as assisting in preparation is a question each firm should answer for itself, ideally before writing the job description.
Support roles that keep preparers preparing
- Intake coordinator. Opens each client's file, sends the request list, logs what arrives and answers "did you get my W-2?" calls.
- Document sorter. Splits large scans, names files, places them in the right client folder and flags anything unreadable. The organizing client files category covers naming and folder rules a sorter can follow from day one.
- Missing-items follow-up. Works the list of clients with outstanding documents, prepares reminders for review and records responses.
- Scheduler and front desk. Books appointments, manages the drop-off shelf and keeps the calendar realistic for preparers.
- Billing and pickup. Prepares invoices for finished engagements and arranges delivery of completed returns.
Each of these roles touches client data, so each needs security training on day one. The onboarding schedule below includes it.
What the support roles are worth
For context on pay, the BLS Occupational Outlook Handbook for bookkeeping, accounting and auditing clerks gives a median annual wage of $50,670 (May 2025 data). The BLS handbook entry for accountants and auditors gives $83,680 (May 2025 data). Seasonal rates vary widely by location and role, so treat these as national reference points, not offers.
Onboarding seasonal tax staff in two weeks
Onboarding seasonal tax staff in two weeks means teaching them, in order, security rules, the firm's systems, one narrow task done well, and then a widening set of tasks under review. The schedule works best when it ends before the heaviest weeks, so the new person is useful by the time volume peaks.
Security comes first because new staff touch client data on day one. IRS Publication 4557 (Rev. 6-2024) suggests asking "every new employee to sign an agreement to follow your company's confidentiality and security standards," limiting access to staff with a business reason to see client information, and requiring multi-factor authentication. Set up accounts with only the access each role needs.
Teach one task before many. A seasonal assistant who can sort and name documents correctly by the end of the first week is more useful than one who has seen every screen and can do none of it alone.
Pair every new hire with one person. That person answers questions, reviews the first batches of work and decides when the new hire can work without a check on every item. Circular 230 points the same way for preparers: Treasury Department Circular 230 (Rev. 6-2014), section 10.22, ties a practitioner's reliance on another person's work to "reasonable care in engaging, supervising, training, and evaluating the person."
A two-week onboarding schedule
The schedule is an example for a seasonal assistant in a support role at a fictional firm. Adjust it for the role and the firm's systems.
| Day | Focus | What the new hire does | Who checks |
|---|---|---|---|
| 1 | Security and access | Signs the confidentiality agreement, sets up multi-factor sign-in, reads the security plan | Office manager |
| 2 | Firm systems tour | Learns where client files live, how the workflow board works and who owns each client | Assigned mentor |
| 3 | Document sorting, part 1 | Sorts and names files for five example clients alongside the mentor | Mentor, every file |
| 4 | Document sorting, part 2 | Sorts files for ten real clients | Mentor, every file |
| 5 | Review and questions | Goes over the week's errors with the mentor; fixes each one | Mentor |
| 6 | Missing items | Learns how the expected-documents list is built and how items are marked received | Mentor |
| 7 | Reminder drafts | Prepares reminders for clients with missing items | Preparer reviews before sending |
| 8 | Client calls | Listens to routine calls, then takes simple ones with a script | Mentor, nearby |
| 9 | Full intake | Handles intake for new clients from first contact to filed documents | Mentor, sample |
| 10 | Independent work | Works a full day of sorting and follow-up | Mentor, spot checks |
By day 10 in this example, the assistant handles sorting and follow-up with spot checks rather than full review. Tools that sort documents on arrival shorten days 3 and 4. Schema CPA classifies each uploaded page by type, issuer and period and checks the folder against last year, so a new assistant spends that time confirming results instead of sorting from scratch; the Schema CPA workflow section shows each step.
How do firms limit tax season burnout?
Firms limit tax season burnout by capping weekly hours, protecting at least one day off each week, spreading work across the season instead of packing it into the final weeks, and moving routine tasks away from preparers. These limits work only when they are set before the season starts and the partners keep them too.
Long hours are part of the profession's calendar. The BLS handbook entry for accountants and auditors notes that "Overtime hours are typical at certain periods of the year, such as for quarterly audits or during tax season." The aim is not to remove overtime but to keep it from running unchecked for months.
Rules that hold up in March
- A weekly hour cap. Pick a number in advance and track it. When a person hits it two weeks running, move work off their desk.
- A protected day. One day a week with no client work, set on the calendar before January.
- Even client loads. The guide to assigning clients to preparers covers balancing loads by complexity as well as client count.
- Routine work to support staff. Every hour of sorting and chasing that moves to a seasonal assistant is an hour a preparer can spend preparing or resting.
- Extensions as a planned tool. Filing extensions for clients whose documents arrive late spreads work past the deadline crunch. The guide to extension strategy for tax firms covers deciding which clients to extend and when.
Watching for early signs
Burnout shows in work before people say anything. Rising review corrections, missed small deadlines and short replies to clients all suggest someone is past their limit. A weekly check-in of a few minutes, asking about workload rather than progress, gives people a chance to say so.
Busy season staffing mistakes: hiring late and training in March
The two most costly busy season staffing mistakes are hiring after the season has started and training new people during the heaviest weeks. Both turn help into extra work, because experienced staff stop to teach when they have the least time. Most other staffing mistakes trace back to a late start.
Hiring late
When hiring starts in February, the best seasonal candidates have often committed elsewhere. The firm takes who is left, and onboarding overlaps the first wave of client documents. Start the search in the fall, with job descriptions written from the capacity gap.
Training in March
A new hire who starts in March needs the same two weeks as one who starts in January, but the mentor now has a full desk. Training gets cut short, errors rise, and review takes longer. Finish onboarding before volume peaks.
Other common mistakes
- Hiring preparers for support gaps. Paying for preparation skills to sort documents wastes budget and frustrates the hire.
- No access plan. Giving every seasonal person full access to every client file is simpler and riskier. Pub 4557 also says to keep terminated employees out of customer information by immediately deactivating their passwords and user names, which matters when seasonal staff finish in April.
- No written procedures. Without a one-page guide to file naming and status codes, each new person invents their own.
- Ignoring returning staff. Seasonal people who worked last year need less training. Invite them back early, before they take other work.
Plan the end of the season too. Decide in advance who covers extended returns after seasonal staff leave, and record what each person learned so next year's onboarding starts from a better guide.