Freelancer/Consultant tool
Flat Fee Estimator
Turn your hourly rate and project scope into a confident flat-fee proposal. Add a buffer for risk and a tax reserve to see what you actually take home.
Project inputs
Risk buffer15%
Buffer for scope creep & revisionsTax reserve25%
Estimated taxes / withholdingWhy add a buffer?
Flat fees shift scope risk to you. A 10–20% buffer protects against unexpected meetings, revisions, and unclear deliverables. Be transparent with clients that the buffer is included in the fixed price.
Invoice schedule
Split the flat fee across milestone payments.
Total: 100%
Milestone%GrossTaxNet
%
$11,040− $2,760$8,280%
$11,040− $2,760$8,280Totals100%$22,080− $5,520$16,560
Tax column matches reserve exactly ($5,520)Σ tax $5,520 / reserve $5,520