Free Business Tools
Free calculators for invoicing, freelancing, and small business — pure client-side, no signup, no tracking.
Late Fee Calculator
Calculate the late fee on an unpaid invoice. Flat-fee or percentage-based, per-month or per-day.
Calculate late fees →
Invoice Due Date Calculator
Compute the due date from any issue date and payment terms — Net 7 / 15 / 30 / 45 / 60 / 90, end-of-month, or due on receipt.
Calculate due date →
VAT Calculator
Add or remove VAT at any rate, with country presets for UK, Ireland, Germany, France, Spain, Italy, AU, NZ, Canada, and Singapore.
Calculate VAT →
Freelance Hourly Rate Calculator
Compute your true freelance hourly rate after self-employment tax, benefits, and the reality of non-billable hours.
Calculate hourly rate →
Need to Issue an Invoice or Quote?
Once you've done the math, generate the actual document in 2 minutes.