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Skonto calculator: is the early payment discount worth it?

Enter the invoice amount and payment terms and see how much you save – and how expensive it is not to use the Skonto.

Discount amount
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Amount to pay with Skonto
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Effective annual interest rate
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The calculation runs only in your browser. Nothing is sent to us or stored.

How it is calculated

  • Discount amount = invoice amount × Skonto rate.
  • Effective annual interest rate = Skonto rate ÷ (100% − Skonto rate) × 360 ÷ (payment term − discount period).
  • A high annual rate means: using the Skonto is usually worth it even if you briefly use your overdraft for it.

Learn more in the guide: Writing invoices →

Frequently asked questions

Do I have to offer Skonto?

No. Skonto is voluntary. If you offer it, the Skonto rate and the period belong on the invoice.

How do I book Skonto?

Skonto reduces the consideration. When you receive it, the input VAT (Vorsteuer) is reduced accordingly; when your clients pay, the output VAT (Umsatzsteuer).

Is Skonto calculated on the gross or the net amount?

In practice mostly on the gross amount of the invoice; the VAT is then corrected proportionally.

Invoices and taxes without a pocket calculator

Kontelio calculates VAT, deadlines and profit automatically from your invoices and receipts.

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The calculators give you a first orientation. The content is general information, not tax advice.