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Deadline Calculator

Calculate event and beginning deadlines, calendar additions and remaining time with month ends, holidays and section 193 BGB.

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BGB deadlineCalculate beginning and end under sections 187–193 BGB

Event or beginning date

Deadline type

Length

UnitGerman state at the place of declaration or performance

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Explanation

How Deadline Calculator works

The calculator technically models the general civil-law calendar rules in sections 187–193 BGB: deadline type, nominal end and any final adjustment.

Event and beginning deadlines

EreignisfristEreignistag nicht mitzählen (§ 187 Abs. 1 BGB)

Das Ende richtet sich bei Wochen, Monaten und Jahren nach dem Tag, der dem Ereignistag entspricht.

BeginnfristBeginnstag mitzählen (§ 187 Abs. 2 BGB)

Das Ende liegt bei entsprechenden Zeiträumen grundsätzlich am Vortag des korrespondierenden Datums.

Practice

Practical examples

One-month event deadline

An event on 31 January 2026 starts a one-month deadline in Berlin.

Result: 31 January is excluded; the nominal end is 28 February and moves from Saturday to 2 March 2026.

One-week beginning deadline

A one-week deadline begins at 00:00 on Monday, 6 July 2026.

Result: The first day counts; Sunday is replaced by Monday, 13 July 2026.

Notes

Common mistakes

Counting the event day
Under section 187(1) counting begins the next day.
Choose event deadline and check the displayed beginning.
Treating every field of law alike
Special legislation may contain different rules.
Check the applicable provision and seek legal advice when needed.

FAQ

Frequently asked questions

Is the result legally binding?

No. It is technical guidance for the general rules in sections 187–193 BGB and not legal advice.

What is an event deadline?

If an event occurs during a day, that day is excluded under section 187(1) BGB.

What is a beginning deadline?

If the beginning of a day is decisive, that day counts under section 187(2) BGB.

What happens when a deadline ends on Saturday?

For the covered declaration or performance, section 193 BGB substitutes the next working day for Saturday, Sunday or a general holiday.

Why is a German state required?

Section 193 refers to a holiday recognised at the place of declaration or performance. The selected state controls state-wide holidays.

How is the 31st handled in a shorter month?

If the decisive day is missing, section 188(3) BGB ends a monthly period on the month's last day.

How is 29 February handled?

Leap years are processed exactly; if the corresponding February date is missing, the month-end rule applies.

Is adding a date the same as a BGB deadline?

No. Addition is pure calendar arithmetic and applies neither a deadline type nor section 193.

How is remaining time calculated?

It is the signed calendar difference between reference date and deadline and does not assess timely action.

Does this apply to tax, administrative or court deadlines?

Not reliably. Individual fields of law can use special rules for service, notification, suspension or filing.

Limits

Limitations

The model cannot replace review of the individual case.
Municipal and only regional holidays are excluded.

Sources

Sources and references

§ 187 BGB – FristbeginnBundesministerium der Justiz / Bundesamt für Justiz
Official distinction between event and beginning deadlines.
View source
§ 188 BGB – FristendeBundesministerium der Justiz / Bundesamt für Justiz
Official rules for day, week, month and year endings and missing month dates.
View source
§ 193 BGB – Sonn- und Feiertag; SonnabendBundesministerium der Justiz / Bundesamt für Justiz
Official adjustment rule for the deadline end.
View source

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