Do you handle the German VAT deadline extension (Dauerfristverlängerung)?

Yes. If you file monthly it is an extra at a fixed €199 per calendar year; if you file quarterly it is included at no extra charge. It is booked in your account once your filing frequency is known, not at signup, and a change of filing frequency applies from the following year. We apply for the permanent one-month extension on every German VAT deadline (Dauerfristverlängerung) for that calendar year at the next application window; the tax office decides, and any special prepayment (Sondervorauszahlung) it asks for is separate from our fee and paid by you directly to the tax office. If you already hold one, tell us at signup and every deadline in your account shifts by a month automatically, so you never track two sets of dates; routine filings under the extension are included in your plan. Full explainer: German VAT deadline extension, explained.