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Kbt. deadlines, 2026

Public procurement deadline calculator

Give the triggering event and its date, and we return the deadline with the Kbt. provision it comes from. Periods counted in working days use the calendar set by the current ministerial decree, including the rearranged working Saturdays.

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Deadline calculator

Choose which deadline you need. The calculator asks only the questions that change the answer under the Kbt., then returns the date together with the provision it follows from.

Not sure which regime applies? The estimated value decides between the EU and the national regime, which you can check against the procurement value thresholds.

You have the date. What now?

The calculator gives you the date. What can still be done within it is another matter. Choose the side you are on.

For contracting authorities For tenderers For legal remedies

How does the Public Procurement Act count?

The starting day does not count

Under Kbt. 48. § (1) the starting day is not counted. If the notice is dispatched on a Tuesday, counting begins on the Wednesday.

For a period stated in a notice, 48. § (4) says the same expressly: the period begins on the day after dispatch or direct sending. The two provisions mark the same start, so they do not stack and no day should be deducted twice.

When the period ends on a non-working day

Under 48. § (3), if the last day of a period does not fall on a working day, the period expires only on the next working day. That is a genuine extension, not a rounding convention.

Which means you have to know which days are working days. Public holidays are listed in the Labour Code, but the rearranged working days are set annually by ministerial decree, and each makes one Saturday a working day and one weekday a rest day. They follow from no rule, so the calculator works from a calendar transcribed out of the decree.

Calendar days and working days are not interchangeable

The Kbt. writes working days where it means them. The preliminary dispute settlement under 80. § runs almost entirely in working days, while remedy and standstill periods run in calendar days.

Confusing the two moves the answer by days, and the error is largest in summer and at year end, when holidays and rearranged Saturdays cluster. Every result states which unit it used and lists the days that were skipped.

What we deliberately do not compute

The Kbt. does not set the rectification period. Section 71 provides neither a minimum nor a maximum, the authority fixes it, subject to the principles in 2. § and the equal conditions required by 71. § (1).

In that case the calculator returns not a date but the statutory requirement that governs the period. The same holds for the participation deadline in the national regime and the tender deadline in a 115. § procedure. For how rectification works in practice, see our separate article on the rectification notice in public procurement.

The working-day calendar

Counting a period in working days means knowing which days are working days. That comes from two independent sources, and the second cannot be derived from any rule.

Public holidays

Listed in the Labour Code. Seven fixed dates, plus four that move with Easter and Whitsun.

Rearranged working days

Set annually by ministerial decree. It turns Saturdays into working days and weekdays into rest days, changing the count in both directions.

Frequently asked questions