Bookkeeping for Consultants: What Actually Needs Doing Each Month

TL;DR: A consulting business has a short, repeating bookkeeping cycle: get every transaction in, match client payments to invoices, sort the business card, handle contractor payments and retainers, confirm transfers, reconcile every account, and keep a list of what only you can answer. Most of that is mechanical. The part that needs you is the business context: which client, what for, was that personal. Prosper groups the mechanical work into decisions and asks only what it can't infer. TidyMonth does the monthly work for $199 a month with a bookkeeper reviewing the close.

You bill clients for your expertise. You don't bill anyone for reconciling your Amex, and yet somehow that's what your Sunday afternoon went to. Or didn't, which is why it's now three months of Sundays.

In Bluevine's 2026 survey of 785 US small-business owners, 42% named bookkeeping as their largest weekly time drain. For a consultant, that's especially galling because the bookkeeping itself is simple. A consulting business has a handful of clients, a few recurring expenses, one or two cards, and very little inventory or complexity. The problem isn't difficulty. It's that the work is recurring, unbilled, and easy to skip.

Here's what actually needs doing, month by month, and the three ways to get it done.

What a consultant's books look like

Before the routine, it helps to see the shape of the thing. A typical consulting business, whether one person or five, has:

Income. Invoices to a small number of clients, paid by ACH, check, card through a processor like Stripe, or a platform. Some clients pay per project, some on retainer, some on milestones. Payments arrive a few days to a few weeks after the invoice.

Expenses. Software subscriptions, a phone, travel and meals when you're on site, professional fees, insurance, maybe a coworking desk or office, and contractors if you subcontract parts of the work.

Owner money. You pay yourself. Depending on your entity type, that's an owner's draw, a distribution, or payroll. Money also moves the other way when you cover a slow month from personal funds.

Accounts. One checking account, one or two cards, sometimes a savings account, and a processor balance if clients pay by card.

That's it. There's no inventory to count, no cost of goods to allocate, no point-of-sale system. Which is why the monthly routine is short.

The monthly routine

1. Get every transaction in. Bank feed or CSV import for every account. Check the count for the month against the statement so you know nothing is missing or doubled. If you're behind, this is where catching up starts.

2. Match client payments to invoices. For each deposit from a client, find the invoice and apply the payment, then match the deposit to that payment instead of adding it as new income. This one step prevents the two most common consulting bookkeeping errors: income counted twice and invoices that show open after the client paid. If clients pay by card, the deposit is net of processor fees, so record the sale in full, the fee as an expense, and the payout as a transfer. See the Stripe payout guide.

3. Sort the card. Go through the card's charges. Group by vendor and apply the same category every time. Pull out anything personal and label it as an owner's draw. Attach receipts for travel, meals, and anything that could be mistaken for personal. Split the orders that have more than one purpose, like an Amazon order with a monitor and a gift in it. If business went on a personal card, reimburse yourself or record it as a contribution with the receipt. See mixed spending.

4. Handle contractor payments. If you subcontract, record each payment to the contractor with a consistent category and keep the invoice they sent you. At year end your CPA will want a total per contractor to decide what filings are needed. A consistent category makes that a report instead of a hunt.

5. Handle retainers and prepayments. A client paying in advance is still a payment: record it, link it to the client, match the deposit. How it shows on your profit and loss depends on your accounting basis, which your CPA confirms. Don't let a prepayment become a mystery deposit.

6. Confirm transfers and owner money. The card payment from checking is a transfer, not an expense. Money to savings is a transfer. Money you took for yourself is a draw. Money you put in is a contribution. None of it belongs on the profit and loss. See transfers and card payments.

7. Reconcile every account. Checking, every card, the processor balance. The books' balance on the last day of the month matches the statement, or you find out why.

8. Write down what's open. The deposit you couldn't place, the charge you don't remember, the question for your CPA. A finished month isn't one with no open items. It's one where they're written down.

Done monthly, with one checking account, one card, and 60 transactions, that's a short session. Most of the time goes to steps 2 and 3. Steps 4 through 8 are quick once the first two are clean.

Where consultants specifically get stuck

The client paid, but not the invoice amount. A client short-pays, deducts a fee, or pays two invoices at once. The deposit doesn't match any single invoice, so it gets added as income and the invoices stay open. Fix: apply the payment across the invoices it covers, note the difference, and match the deposit to that combined payment.

Travel and meals without receipts. These are the charges your CPA will ask about, and they're the easiest to lose. Forward the receipt the day you get it. A category with a receipt is a record. A category without one is a guess.

One card for everything. The single biggest source of cleanup work for a consultant is a card that's used for both business and personal. Separate them if you can. If you can't, sort the card every month rather than every year.

Paying yourself inconsistently. Random transfers to a personal account with no label turn into a question for every one of them at tax time. Label each as a draw when it happens.

Old invoices nobody chased. Receivables from two years ago that were paid, disputed, or forgotten sit on the balance sheet making the books look wrong. See old balances.

How this works in Prosper

Prosper is the platform TidyMonth uses to do this work, and you can use it yourself with your CPA.

The routine above is the same. The difference is how much of it you touch.

Connect your checking account and card through Plaid, forward receipts by email, or import a CSV. Prosper reads your accounts and changes nothing in them. It scans the activity and groups it into decisions: the recurring software subscriptions it's seen before, the client deposit that matches an invoice, the two sides of a card payment shown together as one transfer. You approve, change, or ask your CPA. Prosper asks only about what it can't infer, shows you the evidence before anything is applied, and every change is reversible.

For a consultant that means steps 2, 3, and 6 collapse into a short list of questions instead of a line-by-line review. Which client was that deposit from. Was that Tuesday restaurant a client lunch. Is this the same payment you already recorded. Your answers stay attached to the transactions.

When your CPA asks for records, Prosper prepares a CPA packet with the transactions, the decisions, the evidence, and the open questions in one place. See what your accountant needs at tax time.

Prosper doesn't make the accounting or tax calls. You provide the business context. Your accountant reviews the treatment.

If you'd rather hand it off: TidyMonth

Consultants are the first kind of business TidyMonth was built for. The fit is a US service business on a cash basis, one entity, no inventory, up to six bank or card accounts, and up to about 300 transactions a month for the standard quote.

Start with a free Books Check. Connect your accounts, and it shows which month your books are reliable through, how many months need catch-up, what was checked, and what couldn't be verified from the records available. Nothing in your accounts is changed, and no card is required.

If you fit, you see the price before paying anything. Up to three months of catch-up is included with the $199 per month subscription. Four to six months is $399. Seven to twelve is $799. Beyond that, or with more than three active accounts, a person sends a fixed price.

Then each month TidyMonth handles the agreed work in Prosper: transactions in, payments matched, card sorted, transfers confirmed, accounts reconciled. A bookkeeper reviews the close. You answer the questions only you can, which for most consultants is a handful a month. You get the reports and the open-item status.

If the first close isn't worth it, your first $199 is refunded in full. Cancel in one click. Export your books any time.

What your CPA still decides

This guide covers the bookkeeping routine for a consulting business. It doesn't decide your accounting basis, how retainers are recognized, how you should pay yourself for your entity type, what filings your contractors require, or whether any expense is a business expense for tax purposes. Those are your CPA's calls. Prosper and TidyMonth keep the records complete, consistent, and traceable, so your accountant can make those calls without chasing you for the context.