Free Business Tools
Plan profitable rates, forecast billable hours, enforce payment terms, and close clients faster with Zap Bill's free calculators and ready-to-use templates.
Free Business Tools
Hourly Rate Calculator
Work backwards from income goals, expenses, and billable percentages to set rates that keep your business profitable. Perfect for
CalculatorBillable Hours Planner
Forecast realistic client capacity, target revenue, and utilisation each month with this billable hours calculator.
CalculatorLate Fee Calculator
Apply interest or flat fees to overdue invoices, and communicate the exact amount owed with confidence.
CalculatorVAT / GST / Sales Tax Calculator
Add VAT, GST or sales tax to a price, or work backwards from a tax-inclusive total.
CalculatorInvoice Due Date Calculator
Get the exact due date for Net 7, Net 30, Net 60, EOM or custom payment terms.
CalculatorProfit Margin & Markup Calculator
Convert between cost, selling price, markup and margin to price with confidence.
CalculatorUK Late Payment Interest Calculator
Work out statutory interest and £40–£100 compensation on overdue UK business invoices, using the correct Bank of England reference rate.
TemplateProposal Template
Send polished proposals with sections for scope, deliverables, pricing, and sign-off. Download as Word or Google Doc.
TemplateContract Template
Protect your business with a lightweight contract covering scope, payment terms, revisions, and intellectual property rights.
Free toolSignature maker
Draw, type or upload a signature and download it as a transparent PNG.
How to use these tools together
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1
Price your services
Start with the hourly rate calculator to set a rate based on income goals and realistic billable hours.
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2
Plan your workload
Use the billable hours planner to forecast client capacity, then lock in scope with the proposal template.
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3
Protect your payments
Send your contract, invoice with Zap Bill, and apply late fees if payment terms are missed.
Running a freelance business or small service company means wearing many hats: you're the one doing the work, finding clients, managing projects, handling communication, and running the finances. Every hour spent on non-billable administration is an hour not spent on work that generates income.
Zap Bill's suite of free business tools is built to compress the time you spend on the financial side of your business — from setting rates and planning capacity to creating proposals, sending invoices, and calculating late fees. Each tool in this collection solves a specific, recurring problem that independent professionals face: the hourly rate calculator helps you set rates that actually cover your costs and income goals rather than guessing based on what competitors charge; the billable hours planner helps you forecast realistic client capacity so you don't over-promise or under-earn; the proposal template gives you a professional framework for winning new projects; the late fee calculator helps you communicate and enforce payment terms without awkward conversations; and the contract template protects your business with clear scope and payment terms before work begins.
Use them together to build a more profitable, organized, and professional business — and spend more time on the work you actually enjoy.
Work backwards from income goals, expenses, and billable percentages to set rates that keep your business profitable. Perfect for freelancers and consultants.
Level up your invoicing with our free guides on how to create an invoice, contractor billing templates, and best practices. Read all guides
Ready to send your next invoice?
Create, download, and track invoices in minutes with Zap Bill. Invoices are free without an account, and a free account saves 3 every month.