Withholding Tax Calculator
Calculate an invoice with ritenuta d'acconto: total, the 20% withheld, the net you receive, and the fee to quote for a net figure.
- Net you are paid
- € 1,020.00
- Invoice total
- € 1,220.00
- Ritenuta d'acconto (the client pays it to the tax office)
- € 200.00
- INPS rivalsa
- € 0.00
- VAT
- € 220.00
- Fee needed for this net, if the net was the target
- € 980.39
What it does
Withholding Tax Calculator shows the whole calculation, not just the answer: every intermediate figure is on screen, so you can check it against your own numbers instead of trusting a single output box.
When you need it
Quoting, invoicing, or checking someone else's arithmetic — the moments where being roughly right costs money, and where the formula is easy to get subtly backwards.
Limits and caveats
Figures are unrounded until the final display, so results will not always match a calculation that rounded at each step. This is a working tool, not tax or financial advice, and local rules may differ. Everything happens in your browser, so the file never leaves your device.
How to use the Withholding Tax Calculator
- Enter your numbers.
- Results update as you type.
- No rounding surprises — the maths is shown in full.
Frequently asked questions
- Is the withholding taken on the VAT?
- No — on the fee plus the 4% INPS rivalsa if you charge it, never on the VAT. Withholding on the VAT is the commonest mistake on these invoices.
- What about an occasional job (prestazione occasionale)?
- Set VAT and rivalsa to zero. The 20% then simply comes off the fee.
- Does the forfettario regime use it?
- No. Invoices under the regime forfettario carry no withholding, so set it to zero.
Embed this tool on your site
Copy this code into a page of your site: the calculator works inside it, nothing your visitors type is sent anywhere, and it links back here.