Checklist

The tax calendar — and the cash-flow squeeze

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Your recurring dates

WhatWhenWho
UVA (VAT return)15th of the second month after the period (Q1 → May 15). Quarterly under €100k prior-year turnover, monthly aboveVAT-registered only
Income-tax prepaymentsFeb 15 · May 15 · Aug 15 · Nov 15 (start after your first Bescheid)everyone with tax due
SVS quarterlyend of Feb · May · Aug · Noveveryone insured
ZMmonthly/quarterly with EU B2B revenue, by month-endsee the invoicing guide
Tax return (E1 + E1a)following year: Apr 30 (paper) / Jun 30 (FinanzOnline); much later with a Steuerberatereveryone

The squeeze, illustrated

Year 3 after a good start is the danger zone — three things can land together: the SVS Nachbemessung for year 1 (the SVS guide), raised SVS quarterlies, and a final income-tax bill for last year plus raised prepayments for this one. Founders with healthy businesses get pushed into overdrafts purely by billing lag.

Your two defenses

Put all eight-plus dates in your calendar today, with two-week warnings. Boring advice, highest ROI on this page.

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Status: 2026. Amounts and thresholds change (SVS values adjust yearly) — this is careful general information, not individual tax or legal advice. For your specific case, talk to a licensed Steuerberater.