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, income tax advances based on the tax you entered), 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 for a monthly VAT payer and an identified person, three for everyone else. Which obligations show up depends on your tax regime — a non-VAT payer doesn't see VAT return deadlines, because they don't apply.
Clicking a deadline opens the matching card in Taxes & insurance for that obligation's period — for example the VAT return for September or last year's annual statements.
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).
- 3 May 2027 — filing DPFO for 2026 electronically, without an advisor (generally 4 months after the year ends; 1 May 2027 is a Saturday and a public holiday, so it moves to Monday). 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 when your last known tax exceeded CZK 30,000 (two advances of 40% each); above CZK 150,000 also 15 March and 15 September (four advances of 25% each). The 15 March advance follows the return for the year before last.
Once you copy the tax from line 74 of your return onto the Taxes & insurance → Income tax card (row “Tax advance now” → Edit), the calendar shows only your advance deadlines, with the amount. Without it, it shows the deadline without an amount and with a condition (“Only if tax … exceeded …”) — it never hides anything based on an estimate from your records. A flat-rate taxpayer in the regime doesn't see income tax advance deadlines, because they are part of the flat-rate tax payment; in your first year in business they don't appear either. A flat-rate taxpayer who became a VAT payer leaves the regime at the end of the year of registration (VAT payer from 1 January: at the end of the year before) — the following year the calendar shows the income tax advance deadlines even if you haven't switched to the standard regime in Settings yet.
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, and what decides is when you actually filed the return. For 2026: filed by 1 April 2027 → by 3 May 2027; filed electronically after 1 April 2027 → by 3 June 2027; with a tax advisor → by 2 August 2027. If you do not have to file a return, the deadline is 8 April 2027 for your health insurer and 2 August 2027 for the ČSSZ (31 July is a Saturday).
- The calendar doesn't know when you filed your return, so it shows the statements on the earliest deadline (3 May 2027) and puts the later one in the text. It adds the “If you don't have to file a tax return” deadlines until your income from invoices in Taxorio exceeds the filing threshold (CZK 50,000 for 2026) — Taxorio doesn't know about your other income.
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.