What to include in an accountant invoice
- Period each fee covers. The tax year, quarter or month each line relates to, so a client querying a fee months later can match it to the work.
- Tax preparation on its own. Return preparation billed apart from bookkeeping, since it is seasonal work at a different rate and clients budget for it differently.
- Returns and entities filed. The returns prepared and the entities they cover, such as an individual 1040, a partnership return or a sales tax filing, matching the engagement letter.
- Months reconciled and accounts. The months closed and the bank and card accounts reconciled, which shows what the monthly fee bought even in a quiet month.
- Payroll headcount and runs. Employees paid and the number of pay runs, billed per employee, so adding staff raises the quantity rather than the rate.
- Out-of-scope and cleanup hours. Catch-up bookkeeping, replies to tax agency notices or extra advisory calls, billed hourly apart from the fixed fee so the retainer stays predictable.
- Fees paid for the client. State filing fees or a bookkeeping software subscription you paid for the client, listed at cost with a reference to the receipt.
- Credentials and client entity. Your firm name, CPA or enrolled agent status where it applies, and the client's legal entity name, which is who the engagement letter is with.



