Set aside tax money as it arrives
Irregular receipts make a single year-end tax bill easy to underestimate. A repeatable reserve habit keeps that obligation visible without pretending every month will be equal.

Separate profit from receipts
Deadlines may arrive before year-end
The right percentage depends on local rules, business structure, allowable expenses, and other income. A rough reserve can still be useful if it is reviewed with real records rather than copied from someone else. Start by separating gross receipts, direct project costs, and estimated taxable profit. Note deadlines for estimated payments where they apply. When a payment arrives, move a planned portion into a dedicated account before deciding how much is available for new spending. Review the amount after each quarter and after a significant change in income. The reserve is a planning tool, not a final tax calculation.
The bill hidden in a strong month
A consultant receives two large project payments close together and has a quiet month afterward. If both receipts are treated as spendable cash, the later tax payment competes with ordinary living costs. A separate reserve account and a regular estimate reduce that surprise.
Make the transfer routine
Create a calendar of filing and payment dates for the relevant jurisdiction. Ask a qualified tax professional for an estimate, then use it as an editable rule for each receipt.
Test recent receipts
List the last three payments you received. Apply a provisional reserve rate and compare the result with the cash still needed for direct project costs. Identify the record you need to refine the estimate.
Revisit the estimate
Do not treat a generic percentage as tax advice. Keep records and revisit the estimate when rates, business structure, or income sources change.


