Percorso Cittadino
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Invoice Calculator

Calculate an indicative document total using manually selected rates and bases, then download a non-fiscal PDF summary.

Important information

Percorso Cittadino helps you understand Italian administrative procedures but does not replace public authorities. Before submitting applications or making decisions, always verify the official institutional links provided on this page.

Non-fiscal summary

The result and PDF are calculation summaries only. They are not tax invoices, do not generate an XML file and are not transmitted to the Sistema di Interscambio (SDI).

Invoice calculation summary

Enter the line items and explicitly choose the rates and calculation bases. The tool only performs the requested calculations and does not determine which tax rules apply.

Calculation details

Line items

You may use a full stop or a comma for decimals, without thousands separators.

Line 1

Maximum 120 characters; do not include personal or tax data.

Must be greater than zero; maximum 1,000,000.

Non-negative amount; maximum €1,000,000,000.

Percentage from 0 to 100.

Rates and options

VAT

Enter the chosen rate, including 0. The tool does not decide whether Italian VAT is due. You may use a full stop or a comma for decimals, without thousands separators.

Social security contribution or surcharge

Choose both bases manually. No fund or surcharge is identified automatically. You may use a full stop or a comma for decimals, without thousands separators.

Withholding tax

Withholding tax reduces the net amount payable but not the document total. You may use a full stop or a comma for decimals, without thousands separators.

Stamp duty

The amount is added to the document total and is excluded from the other bases. You may use a full stop or a comma for decimals, without thousands separators.

Results

Complete the fields and select Calculate to display the results.

Formulas and calculation bases

Each line amount and each component are rounded to the nearest cent by the calculation engine.

  • Line gross amount = quantity × unit price
  • Discount = line gross amount × discount rate ÷ 100
  • Line net amount = line gross amount minus discount, rounded to the nearest cent
  • Taxable amount = sum of the line net amounts
  • Contribution = taxable amount × contribution rate ÷ 100, when enabled
  • VAT base = taxable amount + contribution, only when selected
  • VAT = VAT base × VAT rate ÷ 100
  • Withholding tax base = taxable amount + contribution, only when selected
  • Withholding tax = withholding tax base × withholding tax rate ÷ 100, when enabled
  • Document total = taxable amount + contribution + VAT + stamp duty
  • Net amount payable = document total − withholding tax

Calculation limits

  • A maximum of 50 lines and 120 characters per description.
  • Maximum quantity 1,000,000; maximum unit price €1,000,000,000.
  • Rates from 0 to 100; maximum stamp duty amount €1,000,000.
  • One VAT rate per calculation.
  • Stamp duty is excluded from the VAT and withholding tax bases.

No automatic tax determination

You must determine, where appropriate with a qualified professional, whether VAT, a contribution, withholding tax or stamp duty applies and which rates and bases to use.

What the tool does

The tool totals the entered lines and applies only the rates, calculation bases and options you select. It displays the steps and provides a downloadable summary.

It does not determine whether VAT, contributions, withholding tax or stamp duty are due and does not replace checking the applicable rules through official sources or with a qualified professional.