Future Tense in Czech

Overview

Czech forms the future tense in two fundamentally different ways depending on verbal aspect, making this topic a direct extension of the perfective/imperfective distinction. At the CEFR B1 level, mastering both future constructions is essential for discussing plans, predictions, and intentions.

For perfective verbs, the future is expressed simply by using the present-tense conjugation — a perfective verb's present form inherently refers to a completed future action. For imperfective verbs, Czech uses the auxiliary budu (I will be) plus the infinitive, similar to English "will be doing." The verb být has its own future: budu, budeš, bude, budeme, budete, budou.

This dual system means learners must always consider aspect when forming the future. Napíšu dopis (I will write and finish a letter) differs meaningfully from Budu psát dopis (I will be writing a letter).

How It Works

Imperfective Future: budu + Infinitive

Person	Form	Translation
já	budu psát	I will write/be writing
ty	budeš psát	you will write
on/a/o	bude psát	he/she will write
my	budeme psát	we will write
vy	budete psát	you (pl.) will write
oni	budou psát	they will write

Perfective Future: Present Form = Future

Infinitive (perf.)	já	ty	on/a/o	Meaning
napsat	napíšu	napíšeš	napíše	will write (finish)
přijít	přijdu	přijdeš	přijde	will arrive
udělat	udělám	uděláš	udělá	will do/make
koupit	koupím	koupíš	koupí	will buy

Future of být

Budu, budeš, bude, budeme, budete, budou — functions both as standalone "will be" and as the imperfective future auxiliary.

Examples in Context

Czech	English	Note
Napíšu dopis.	I will write a letter (and finish).	perfective
Budu psát dopis.	I will be writing a letter.	imperfective
Co budeš dělat?	What will you be doing?	imperfective
Přijdu v pět.	I will come at five.	perfective
Budeme čekat.	We will wait.	imperfective
Koupím to zítra.	I'll buy it tomorrow.	perfective
Bude pršet.	It will rain.	imperfective
Budete tam?	Will you be there?	být future
Až přijdeš, zavolej.	When you arrive, call.	perfective in temporal clause
Budu se učit celý den.	I'll be studying all day.	imperfective, duration

Common Mistakes

Using budu with perfective verbs

• Wrong: Budu napsat dopis.
• Right: Napíšu dopis.
• Why: Perfective verbs form their future with the present conjugation alone. Adding budu is ungrammatical.

Using perfective for ongoing future

• Wrong: Napíšu celý den. (meaning "I'll be writing all day")
• Right: Budu psát celý den.
• Why: Perfective implies completion. Ongoing future requires the imperfective construction.

Forgetting aspect pairs

• Wrong: Using imperfective when a single completed action is meant
• Right: Match aspect to intended meaning
• Why: Přečtu tu knihu (I'll read through) vs. Budu číst tu knihu (I'll be reading) express different things.

Usage Notes

In spoken Czech, perfective present-as-future is extremely common for plans: Zajdu do obchodu (I'll pop into the shop), Zavolám ti (I'll call you). The imperfective budu + infinitive emphasizes duration or process.

Common Future Expressions

Czech	English	Type
Zítra budu pracovat.	Tomorrow I'll be working.	imperfective
Hned to udělám.	I'll do it right away.	perfective
Co budete dělat o víkendu?	What will you do this weekend?	imperfective question
Přijdu, jakmile budu moct.	I'll come as soon as I can.	perfective + imperfective
Nebude to trvat dlouho.	It won't take long.	imperfective negative
Uvidíme se zítra.	We'll see each other tomorrow.	perfective

The perfective future is overwhelmingly common in everyday Czech for specific, bounded future actions. The imperfective budu + infinitive is used when duration, process, or ongoing state matters. Native speakers switch between the two unconsciously, and developing this instinct is a key B1 milestone.

Až vs. Když for Future Events

Czech distinguishes between když (when — habitual or past) and až (when — future single events):

• Až přijdu domů, zavolám. (When I get home, I'll call.)
• Když přijdu domů, vždy si uvařím čaj. (When I get home, I always make tea.)

Using až for future reference and když for habitual/past reference is a key pattern.

Practice Tips

• Take five common aspect pairs (psát/napsat, dělat/udělat, číst/přečíst) and write both future forms, noting meaning differences.
• Describe tomorrow using both forms: perfective for completions, imperfective for ongoing activities.
• Listen for budu/budeš/bude in Czech — it signals imperfective future or the future of být.

Related Concepts

• Prerequisite: Verbal Aspect — builds the foundation for future tense