Good bookkeeping is a short weekly routine plus a slightly longer monthly one, not a heroic effort in the week before a deadline. The businesses that struggle are almost never the ones with complicated finances; they are the ones with no routine, where three months of receipts accumulate and then get reconstructed from memory. Below is a checklist organised by how often each task genuinely needs doing.
Weekly: twenty minutes, no exceptions
The weekly pass exists to stop backlogs forming. Record sales and purchase invoices while you still remember the context, log expenses and attach receipts before they are lost, and enter any payments received or made. Twenty minutes a week is genuinely enough for most small businesses, and it removes the single largest source of bookkeeping error, which is reconstructing details you no longer remember.
- Record sales invoices raised and purchase invoices received
- Log expenses and attach or photograph receipts
- Enter payments received and payments made
- Note anything unusual while you still remember why
Monthly: the reconciliation that catches errors
Monthly is when you check that the books match reality. Reconcile every cash, bank and mobile-wallet account against its statement, because that is what catches duplicates, omissions and transposed figures. Review receivable aging and act on anything past due while it is still collectable. Check payables so nothing slides into a late fee. Then read the profit figure and ask whether it looks plausible, since a number that surprises you usually indicates an error rather than a surprise.
- Reconcile every cash, bank and wallet account to its statement
- Review receivable aging and chase the oldest first
- Check payables and upcoming due dates
- Read profit and loss and question anything that looks wrong
Monthly if you hold stock
Inventory is where small-business books most often diverge from reality, and it happens quietly. Count at least your highest-value lines, record wastage and damage as proper adjustments rather than leaving a gap, and check that stock returns and sales returns were actually entered. A stock figure that has not been verified against a physical count for six months is not a number you can plan with.
- Spot-count high-value lines monthly, full count quarterly
- Record wastage and damage as adjustments, not as gaps
- Confirm returns were entered on both sides
- Investigate discrepancies through movement history rather than adjusting them away
Quarterly: the review that changes decisions
Quarterly is long enough to see a trend and short enough to still act on it. Compare this quarter against the last two and look for margin drift, which is usually gradual and therefore invisible month to month. Review which products or customers actually generate profit rather than revenue. Check whether recurring subscriptions are still being used. Set aside tax rather than discovering the liability later.
- Compare margin across the last three quarters
- Identify products and customers that generate profit, not just revenue
- Audit recurring subscriptions and standing costs
- Set aside tax as you go instead of at the deadline
Annually: close properly
The annual close is straightforward if the monthly routine held. Run a full stock count, post depreciation on fixed assets, write off receivables that are genuinely not coming, and reconcile every account one final time. Then archive the year's reports as PDFs somewhere outside the accounting system, because a clean set of closing statements is what makes next year's opening balances trustworthy.
- Full physical stock count and valuation
- Post depreciation on fixed assets
- Write off genuinely uncollectable receivables
- Archive closing reports outside the system
The four records that cause most year-end pain
In practice, year-end problems concentrate in four places. Cash expenses paid personally and never recorded. Stock adjustments made physically but not in the books. Partial payments tracked in someone's head instead of against the invoice. And owner drawings mixed with business expenses. None of these are difficult; they are simply the ones people skip because they feel small at the time.
- Reimburse and record personally paid expenses the same week
- Enter stock adjustments when they happen physically
- Record partial payments against the specific invoice
- Keep owner drawings strictly separate from business expenses
FAQs
What should a small business bookkeeping checklist include?
Weekly: record invoices, log expenses with receipts, enter payments. Monthly: reconcile every bank and cash account, review receivable aging and payables, read the profit and loss. Quarterly: compare margins, review profitability by product and customer, set aside tax. Annually: stock count, depreciation, write-offs and a full close.
How often should I do my bookkeeping?
A short weekly pass of around twenty minutes, plus a longer monthly reconciliation. Weekly entry is what prevents backlogs, and monthly reconciliation is what catches the duplicates and omissions that weekly entry misses.
What is the most common small business bookkeeping mistake?
Unrecorded cash expenses paid personally by the owner. They are individually small, easy to forget, and collectively overstate profit while understating legitimate deductions. Recording and reimbursing them in the same week is the fix.
Do I need a bookkeeper if I use accounting software?
Software handles recording and reporting; it does not handle judgement. Many small businesses do their own weekly and monthly routine and use an accountant quarterly or annually for review, tax and close. That split is usually the best value.
How do I catch up on months of missed bookkeeping?
Work backwards from bank and card statements rather than forwards from receipts, because statements are complete and receipts are not. Enter one month at a time and reconcile each before moving on, then restart the weekly routine immediately so it cannot recur.