How the total is worked out
This calculator subtracts the discount from the subtotal first, then applies sales tax to the discounted amount, then adds shipping or fees (which it treats as not taxable), and finally subtracts any deposit already paid. The balance due is what the customer still owes.
Rules for what is taxable vary a lot. In some places labor is taxable and in others it is not, and shipping may or may not be taxed. Check with your state or an accountant, and adjust the numbers here if your case differs.
Showing it clearly on an invoice
- List the subtotal, then the discount, then tax, so the customer can follow each step.
- Show a deposit as a credit, not as a discount.
- Put the total and the due date together where they are easy to find.
- If you invoice often, a template that does this arithmetic for you prevents mistakes.
Questions
Is sales tax calculated before or after a discount?
In most places it is calculated on the price after a discount from the seller. Rules differ, so confirm for your location.
How do I handle a deposit?
Show the full total first, then subtract the deposit as a payment received. The result is the balance due.
Does this save my numbers?
No. Everything stays in your browser and nothing is sent or stored.
Use this tool on your site
You are welcome to embed this calculator on your own blog or website for free, or just link to it. The embed keeps a small credit link to BillingReceipts.
Make an invoice or receipt and download a PDF. Free, no signup.
General information, not legal, tax or accounting advice. Rules vary by place.