# Freelance Invoice Calculator Example

Draft a freelance invoice in Calcul.io by multiplying hours by a rate, adding expenses, applying a tax percentage, and checking the amount due.

## Freelance invoice

Turn billable hours, expenses, and a tax percentage into an amount due. The sample uses 18 hours at $65 per hour and a 15% tax estimate.

```calculio
hours = 18
rate = 65$
subtotal = hours * rate
expenses = 42$
tax = (subtotal + expenses) * 15%
invoice = subtotal + expenses + tax
```

## How it works

1. Replace `hours` and `rate` with the numbers on your timesheet and agreement.
2. Add reimbursable costs on the `expenses` line.
3. Adjust the tax percentage for your estimate, then review `invoice` before sending it.

This is a calculation aid, not tax advice. Use the rate and tax rules that apply to your work and location.

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