PrestoBillsPrestoBills
Free Business Tools

Calculators & Tools

Free business calculators built for freelancers and small businesses. No signup required.

Late Payment Fee Calculator
Calculate interest and late fees on overdue invoices. Know exactly what you're owed when clients pay late.
Hourly Rate Calculator
Calculate your ideal hourly rate based on desired income, expenses, and billable hours. Price your services profitably.
Freelance Tax Calculator
Estimate quarterly self-employment taxes based on your income and expenses. Stay prepared for tax season.
Invoice Numbering Generator
Generate systematic invoice numbers with custom prefixes and formats. Keep your invoices organized.
Project Profitability Calculator
Calculate actual profit margins and effective hourly rates for your projects. Know if you're making money.
Retainer Pricing Calculator
Calculate monthly retainer rates based on estimated hours and services. Price recurring work fairly.
Discount Impact Calculator
See the true cost of offering discounts on your profit margins. Make informed pricing decisions.
Break-Even Calculator
Calculate how many clients or projects you need to cover your business expenses. Plan for profitability.
Payment Terms Comparison
Compare the cash flow impact of different payment terms (Net 15, 30, 60). Choose the best terms for your business.
Scope Creep Calculator
Calculate the cost of out-of-scope work requests. Know what to charge for additional work.
Time Tracking Converter
Convert tracked hours into formatted invoice line items. Streamline your invoicing process.

Ready to Streamline Your Business?

Stop using separate calculators and spreadsheets. PrestoBills has all these tools built-in, plus professional invoicing, payment tracking, and automated reminders.

7-day free trial • No credit card required • All tools included

Why Use These Free Business Calculators?

Running a freelance business or small company requires making smart financial decisions every day. Our free calculators help you price your services correctly, manage cash flow, understand your taxes, and maximize profitability.

Essential Tools for Every Freelancer

Whether you're just starting out or scaling your business, these calculators solve common pain points that every freelancer faces. From setting your hourly rate to tracking project profitability, we've built tools that help you make data-driven decisions.

Built by Freelancers, For Freelancers

We understand the challenges of running a freelance business because we've been there. Each calculator is designed to solve real problems that we've encountered in our own businesses, from handling late payments to managing scope creep.

No Signup Required

All our tools are completely free and require no registration. Use them as often as you need. If you want to save your calculations and integrate them with professional invoicing, check out PrestoBills.