The tax calendar on the Overview
The tax calendar is a card on the Overview, right next to the Inbox queue. It shows upcoming obligations sorted by date — and for the ones where Taxorio knows the amount (social and health insurance advances, flat-rate tax advances, VAT payable), it shows straight away how much the deadline will cost you. So you don't just have to remember the date — you see the amount too.
The calendar shows the nearest four deadlines; you'll find the same deadlines — plus one more — as a strip above the cards in Taxes & insurance. The outlook is the same in both places: the nearest two months, or three for a quarterly VAT payer. Which obligations show up depends on your tax regime — a non-VAT payer doesn't see VAT return deadlines, because they don't apply.
How to spot an approaching deadline
Urgency is shown by the icon's colour and a day countdown next to the date:
- Red — 7 days or fewer remain. Time to act.
- Orange — 8 to 14 days remain. A good time to prepare the paperwork.
- Purple — more than 14 days. The deadline is just for your information.
A deadline disappears from the calendar on its own once it passes. There's nothing to check off manually — Taxorio doesn't track whether you've actually filed, so nothing disappears just because you clicked it.
Key deadlines for the self-employed (OSVČ)
VAT (VAT payers only)
- Monthly payers — the VAT return and VAT control statement by the 25th day of every month, for the previous month.
- Quarterly payers — the VAT return and VAT control statement by 25 April / 25 July / 25 October / 25 January.
Income tax (DPFO)
Since 2023, a self-employed natural person has a data box set up by law, so returns are filed electronically. The calendar therefore shows only the electronic deadline — the paper deadline and the deadline with an advisor would only confuse you, so we leave them out.
- 1 April — filing the DPFO return on paper (not in the calendar).
- 4 May — filing DPFO electronically, without an advisor (in 2026; generally by the end of the 4th month after the year ends, shifted because of the 1 May public holiday). This is the deadline you'll see in the calendar.
- 1 July — filing DPFO represented by a tax advisor (not in the calendar).
- 15 June and 15 December — income tax advances (for an annual tax of CZK 30,000–150,000 — two half-yearly advances, each 40% of the last tax); for a tax above CZK 150,000, four quarterly advances: 15 March, 15 June, 15 September, 15 December.
Social and health insurance for the self-employed
- Monthly social insurance advances are due by the end of the calendar month they're paid for; health insurance advances by the 8th day of the following month.
- Statements for the ČSSZ and your health insurer — within a month of the income tax return deadline; both authorities have the same deadlines for 2025, and what decides is the date you actually filed the return: no duty to file a return → by 8 April 2026; filed by 1 April 2026 → by 4 May 2026; filed electronically after 1 April 2026 → by 4 June 2026; with a tax advisor → by 3 August 2026.
How the deadlines change with your VAT period
Taxorio automatically adapts the deadlines shown to your settings. If you're a quarterly VAT payer, the calendar doesn't show the monthly VAT deadlines. If you're a non-VAT payer, VAT deadlines don't appear in the calendar at all.
You change the VAT tax period under Settings → Company details — the change is reflected in the tax calendar immediately.