New Bookkeeper Wants to Amend Old Sales Tax Returns: Your Options
A new bookkeeper recalculated three years of sales tax and wants amended returns. Is that normal, and how should monthly fees be set?
A familiar question comes up again and again in small-business communities: a new bookkeeper reviews prior years, finds a sales tax shortfall, and proposes amending returns that were already filed and paid. The owner wonders whether the look-back is normal, whether they can refuse, and what a fair monthly fee looks like. All three are worth untangling. Here is how we would approach each part.
Is it normal for a new bookkeeper to review prior years?
Yes, and there is a practical reason for it. A new bookkeeper cannot produce trustworthy current numbers without a trustworthy starting point. That means checking opening balances, clearing old unresolved items, and confirming how sales tax was set up.
If the books were thin from the company’s first day, the review can stretch back a long way. Three years sits at the longer end, but it is not strange when there was little structure to inherit. Starting fresh in a new year does not remove the need for accurate opening balances. Those balances come from somewhere, and that somewhere is the old records.
Sales tax is treated differently from other lines
Sales tax you collect belongs to your customers until you hand it to the state. A bookkeeper treats it as money held in trust, not as an expense line to estimate. An accepted return does not close the matter.
If the amount collected exceeded the amount remitted, the gap is generally still owed, and interest typically keeps running from each original due date. Rules and look-back windows differ by state, but underpayments rarely disappear on their own. A bookkeeper who flags the gap is doing the job you hired them for.
Can you say no to filing amended returns?
The decision is yours. A bookkeeper can recommend amendments, but you authorize them, and nobody should file on your behalf without your sign-off. That said, refusing has consequences on both sides.
Declining does not erase the underlying liability. The tax authority can still assess the shortfall later, and penalties discovered during an audit are often heavier than those from a voluntary correction. On the other side, many bookkeepers will not keep working on books they believe are knowingly wrong, so a refusal can end the relationship. That is a professional boundary, not retaliation.
Get the calculation in writing before deciding
Ask for a simple written summary before you authorize anything: which periods are affected, the shortfall per period, how each figure was derived, and the estimated penalties and interest. Add the agency involved and the filing method they intend to use.
Then have your tax preparer review that summary. Amended sales tax filings are a tax decision, not a bookkeeping chore, so they deserve a second professional opinion. The number may shrink once rounding and filing frequency are checked, or the gap may be real. Either way you will decide on paper, not on a verbal claim.
How are monthly bookkeeping fees determined?
Fees usually track workload, not calendar months. The drivers are transaction volume, the number of accounts to reconcile, payroll complexity, and how much of the work is done by hand versus by software. A seasonal shop with one POS, one checking account, and one credit card sits at the simpler end of that scale.
Simple setups still justify a steady monthly fee, because the work continues in the off season: reconciliations catch up, filings stay current, and questions arrive year-round. If the number feels high, ask for a breakdown. Which tasks does the fee cover, how many hours do they take, and what counts as extra work? A bookkeeper who cannot answer that in a sentence is worth pressing.
Manual entry versus automated bank feeds
Bank feeds in QuickBooks Online import transactions automatically, and POS platforms such as Square export their own sales summaries. A bookkeeper who keys everything in by hand can spend hours on work software finishes in minutes, and that labor often shows up in the invoice.
Manual entry is sometimes the right call, for instance with unusual accounts or strict internal controls. For a straightforward account set, though, it is fair to ask which tools they use and why. The answer tells you whether the fee reflects real complexity or simply an old workflow.
Your immediate next step is a single page: the periods in question, the calculated shortfalls, the estimated penalties, and the fee breakdown. With that in hand you can weigh the cost of amending against the cost of waiting, and you will know exactly what the monthly fee buys.