Choosing the Right Future | Czech Grammar

Czech has no single "future tense" the way English has will. Instead it builds the future three different ways, and the one you pick is dictated by aspect and, for verbs of motion, by direction. The good news is that the choice is not a matter of taste — once you can classify your verb, the right form is forced. This page is the decision tree that ties together the three strategies you have already met on their own pages.

The three futures at a glance

Every Czech future statement uses exactly one of these patterns:

Strategy	Built from	Example	Meaning
Perfective present	a perfective verb in present-tense form	napíšu, koupím, udělám	one completed future event
budu + imperfective infinitive	future of být + imperfective infinitive	budu psát, budu pracovat	ongoing / repeated / process
Synthetic motion future	prefix po-/pů- on a determinate motion verb	půjdu, pojedu, poletím	one future trip, one direction

The single most important thing to internalise: a perfective verb is already future when it stands in the present form, so it never takes budu. Saying budu napsat is the classic beginner error — it stacks a future auxiliary onto a verb that is grammatically forbidden from having a present meaning in the first place.

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The decision is almost never "which sounds nicer." It is forced by aspect (one event vs. process) and, for going somewhere, by whether the trip is one-directional. Classify first, then the form writes itself.

Step 1 — Is it a verb of motion (go / ride / fly)?

Handle motion verbs first, because they break the normal rule. For jít, jet, letět (and their relatives) a single future trip in one direction takes the special synthetic future formed with po- or pů-, not budu.

V sobotu půjdu ven s kamarády.

On Saturday I'll go out with friends.

Příští týden pojedu do Brna na konferenci.

Next week I'll go (drive/travel) to Brno for a conference.

Zítra ráno poletím do Londýna.

Tomorrow morning I'll fly to London.

But if the motion is habitual or multidirectional, you switch to the indeterminate verb (chodit, jezdit, létat) and build a normal budu future:

Od září budu chodit do nové školy.

From September I'll be going to a new school.

Příští rok budu jezdit do práce na kole.

Next year I'll be commuting to work by bike.

So motion splits into two sub-cases — one trip (půjdu / pojedu / poletím) versus a habit (budu chodit / budu jezdit / budu létat). For the full picture see motion futures: půjdu, pojedu and the motion verbs overview.

Step 2 — One completed event? Use the perfective present

If the verb is not a motion verb, ask: does the action reach a result and finish? Will it be done, written, bought, fixed? If yes, take the perfective member of the aspect pair and put it in its present-tense form. That form is read as future.

Zítra ten dopis konečně dopíšu.

Tomorrow I'll finally finish writing that letter.

Tu lampu ti opravím o víkendu.

I'll fix that lamp for you over the weekend.

Až dostanu výplatu, koupím si nové boty.

When I get my paycheck, I'll buy myself new shoes.

Notice that napíšu, opravím, koupím carry no budu. The prefix or stem already signals completion, and Czech reads a completed action that hasn't happened yet as future by default. This is covered in depth on the perfective future page.

Step 3 — Ongoing, repeated, or a process? Use budu + imperfective infinitive

If the action stretches out, repeats, or you are simply naming the activity without caring whether it finishes, take the imperfective member and build the analytic future with budu, budeš, bude, budeme, budete, budou plus the imperfective infinitive.

Celé léto budu pracovat na zahradě.

All summer I'll be working in the garden.

Večer budu jen číst a odpočívat.

In the evening I'll just read and rest.

Od ledna budeme chodit na češtinu dvakrát týdně.

From January we'll be going to Czech class twice a week.

The contrast with Step 2 is the heart of the system. Compare:

Dnes večer budu psát referát.

Tonight I'll be writing an essay. (the activity, no claim it'll be finished)

Dnes večer ten referát napíšu.

Tonight I'll write the essay. (and finish it)

Both are perfectly correct; they say different things. The first commits you to spending the evening writing; the second commits you to producing a finished essay. See aspect in the future for more pairs like this.

The cue words that tip the balance

You rarely choose in a vacuum — adverbs in the sentence point you toward one aspect.

Cue word	Pushes toward	Why
zítra, v sobotu, příští týden (+ a result)	perfective present	a fixed point where the thing gets done
celý den, celé léto, pořád, stále	budu + imperfective	duration, no endpoint
každý den, každou středu, pravidelně	budu + imperfective	repetition / habit
najednou, hned, konečně, do večera	perfective present	completion, a deadline

Každou středu budu hrát fotbal.

Every Wednesday I'll play football. (habit → imperfective)

Do večera to dodělám.

I'll get it done by this evening. (deadline → perfective)

Be careful: a date word like zítra does not by itself force perfective. Zítra budu celý den uklízet ("tomorrow I'll be cleaning all day") is imperfective because of the durative celý den. The cue words combine — read the whole sentence, not just one adverb.

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English speakers reach for "will" and then stall, because "will" hides the aspect choice Czech forces you to make out loud. Train yourself to ask "done, or going-on?" before you open your mouth.

How English differs

English marks the future once, with will or going to, and leaves completion to context: "Tomorrow I'll write the letter" doesn't grammatically tell you whether it gets finished. Czech refuses to leave that vague — the verb form itself encodes it. There is also nothing in English like the motion future: English uses the same "will go" whether you mean one trip or a new commute, whereas Czech distinguishes půjdu (this trip) from budu chodit (the habit). Finally, English routinely uses the present for scheduled future ("the train leaves at six"); Czech can do this too, but the safe, neutral choice is one of the three patterns above.

A worked mini-decision

Take the thought "Tomorrow I'll be at home all day and I'll finish the report." Two clauses, two different futures:

Zítra budu celý den doma a dodělám tu zprávu.

Tomorrow I'll be home all day and I'll finish the report.

The first half (budu doma) is a state with duration — být in its plain future. The second half (dodělám) is one completed result — perfective present. One sentence, both strategies, each correct for its own clause.

Common Mistakes

❌ Zítra budu napsat ten dopis.

Incorrect — budu cannot combine with a perfective infinitive.

✅ Zítra napíšu ten dopis.

Tomorrow I'll write the letter. (perfective present = future)

❌ Celé léto budu opravit dům.

Incorrect — 'all summer' is durative, so use an imperfective.

✅ Celé léto budu opravovat dům.

All summer I'll be fixing up the house.

❌ V sobotu budu jít do kina.

Incorrect — a single trip with jít takes the synthetic future, not budu.

✅ V sobotu půjdu do kina.

On Saturday I'll go to the cinema.

❌ Příští rok budu pojedu k moři.

Incorrect — pojedu is already future; never stack budu on it.

✅ Příští rok pojedu k moři.

Next year I'll go to the seaside.

❌ Každý den napíšu jednu stránku.

Off — a perfective with 'every day' clashes; habit needs the imperfective future.

✅ Každý den budu psát jednu stránku.

Every day I'll write one page.

Key Takeaways

Motion in one direction (one trip) → synthetic future: půjdu, pojedu, poletím.
One completed result → perfective present: napíšu, koupím, opravím — never with budu.
Process, duration, or habit → budu + imperfective infinitive: budu psát, budu pracovat, budu chodit.
Two forbidden combinations: budu + perfective infinitive and budu jít/jet/letět. If you remember nothing else, remember those two never happen.

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