Use a few cost groups consistently
Start with revenue collected or earned for the month, then group direct costs, fixed operating costs and marketing or other costs. The exact chart of accounts can grow later; consistency is more useful than an overly detailed spreadsheet that is never updated.
Separate profit from cash flow
Profit is the difference between revenue and the costs you allocate to the period. Cash flow is about timing: a profitable invoice may not have been paid yet, while a supplier bill, tax payment or loan instalment may leave the bank account before the month ends. Review both views before deciding what you can safely spend.
A 20-minute monthly routine
- Export or list sales, bills, payroll and recurring payments for the month.
- Put each material cost into one consistent group.
- Compare the total to the previous month and ask what materially changed.
- List expected receipts and payments for the next month.
- Act early if cash appears likely to fall below a sensible operating buffer.
Keep the result useful, not perfect
Do not wait for a perfect system to begin. Use the same simple categories for three months, then improve the detail only where it changes a decision. For statutory reporting, bookkeeping, tax or audit, keep the records your professional adviser requires.
Sources and further reading
General information only; use qualified accounting and tax advice for formal records and filings.