US DECISION HUB
Tax & payroll
Keep collected tax separate from revenue, monitor registration thresholds and model salary together with employer on-costs. This edition uses US dollars and US terminology where relevant.
Sales Tax Calculator
Add or remove sales tax with a clear breakdown.
Open calculator →TaxReverse Sales Tax Calculator
Separate a tax-inclusive total into subtotal and sales tax.
Open calculator →PayrollTrue Employee Cost Calculator
Estimate the full cost of hiring beyond headline salary.
Open calculator →PayrollHiring Affordability Calculator
Test whether available cash and monthly trading can support a new hire.
Open calculator →A connected workflow
Planning tools for VAT, sales tax and the full employer cost of payroll. Work through the calculators in the order that matches the decision rather than collecting isolated metrics.
- Confirm the obligation: Identify the relevant market, period, transaction or employee before choosing a rate or threshold.
- Separate entrusted cash: Keep VAT or sales tax collected distinct from operating revenue and the cash available to spend.
- Model the full payroll cost: Add employer taxes, pension or retirement contributions, benefits, recruitment and setup costs to salary.
- Verify before filing: Use the calculator as a planning control and reconcile the final position to official records and guidance.
Checks before acting
- Use current official rates and thresholds.
- Do not assume every sale has the same tax treatment.
- Treat calculator outputs as planning estimates, not completed returns or payroll filings.
Read the small-business sales tax calculation guide →
US federal, state and local rules can differ. Use these tools for planning, then confirm material obligations with the relevant authority or a qualified professional.