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: 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. If you do not have to file a return, the deadline is 8 April 2026 for your health insurer and 31 July 2026 for the ČSSZ.
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.