Free, no sign-up required. Built for plumbers, electricians, builders, and every trade in between.
Calculate VAT, GST, or sales tax instantly. Add or remove tax from any amount. UK, US, Canada, Australia.
Work out what you should charge per day or hour. Accounts for holidays, sick days, overhead, and desired take-home pay.
Enter your cost and desired profit margin. Get the selling price, markup percentage, and profit amount instantly.
Calculate your approved mileage allowance using HMRC, IRS, CRA, or ATO approved rates for tax purposes.
Find out how much a job actually made. Enter your quote value, labour, and materials to see your real profit margin.
Coming soon — download-ready Excel templates for quotes, invoices, mileage logs, and change orders.
Wrencher does all of this automatically — tax calculations, job tracking, quotes, invoices, mileage — so you can spend your evenings doing something other than paperwork.
Download free — 30 day trialNo credit card · Windows 10/11 · Your data stays on your computer