Free business tools

Business calculators for tax, invoice, and payroll planning.

Use these public tools for quick estimates, then move into Muhasaba Pro when you need organized records, reports, invoices, and secure workflows.

GST/HST, VAT, and sales tax calculator

Estimate taxes with configurable tax names and regional rates.

Open calculator

Invoice total calculator

Estimate invoice subtotal, discount, tax, deposit, and balance due.

Calculate invoice

Payroll cost estimator

Estimate gross pay, employer cost rate, total payroll cost, and average cost per employee.

Estimate payroll
Feature pages

Explore the full product areas behind the calculators and public planning tools.

Explore Features