ISPBox Wiki

Taxes and VAT

Published Jul 11, 2026 · Updated Jul 11, 2026 · 2 min read

How ISPBox applies tax: the EU VAT rate vs the non-EU tax rate, tax-inclusive pricing (tax is worked out of the price, not added on top), invoice display, and the late-fee exception.

Tax settings: Default VAT rate set to 23 percent, the non-EU tax rate field disabled, and Include VAT summary on invoices enabled

ISPBox applies one tax rate to your invoices and, importantly, treats your prices as tax-inclusive: the amount the customer pays stays the round number you set, and ISPBox breaks each line into net + tax underneath. This guide covers the two rate fields, how the maths works, and where the tax shows up on the invoice.

1. Where to set it

Open Settings > Invoices > General. There are two rate fields, and they are mutually exclusive - filling one disables the other:

  • Default VAT rate (%) - for EU VAT invoices. Tick Include VAT summary on invoices to print the VAT breakdown.
  • Default tax rate (%) - for non-EU taxation. It is ignored while a VAT rate is set.

Pick whichever matches your region; leave both blank if you do not itemise tax.

2. Prices are tax-inclusive

Whichever field you use, ISPBox reads your package and charge prices as the gross (tax-included) total and works the tax out of it, rather than adding tax on top. The net is the price divided by one-plus-the-rate:

  • A 50.00 plan at 23% VAT becomes 40.65 net + 9.35 VAT = 50.00.

So the customer is always billed the price you advertised - the tax figure is a breakdown of that price, not an extra charge bolted on. This keeps plan prices clean, round numbers.

3. On the invoice

With VAT enabled and the summary turned on, the invoice shows the net, the VAT amount and the total. You can tailor exactly which tax columns and rows appear on the PDF from Settings > Invoices > Appearance (VAT rate/amount columns, VAT total row, or the equivalent tax/fees rows for the non-EU field).

You can also rename the tax label - for example print GST instead of VAT, or title the document TAX INVOICE - under the invoice text customisation in the same settings.

4. The one exception: late fees

Late fees are the one place tax is added on top rather than extracted. A late fee is calculated as a percentage of the overdue balance, and then the tax is applied on top of that fee. Everything else - recurring service charges and one-time charges - is inclusive as described above.