Termin płatności jest jutro.

Not really. In Polish, termin often means:

• deadline
• due date
• appointment
• scheduled date/time

In termin płatności, it means due date or payment deadline.

So this is a bit of a false friend: English term and Polish termin are not usually used in the same way.

Because after termin, Polish commonly uses another noun in the genitive case to mean the deadline/date of something.

• płatność = payment
• płatności = of payment / payment’s

So:

• termin płatności = payment due date / deadline for payment

This is a very common noun + noun pattern in Polish.

Here it is genitive singular.

The base form is:

• płatność = nominative singular

After termin, it changes to:

• płatności = genitive singular

So the structure is basically:

• termin
  • płatności
• deadline
  • of payment

No — here it is singular, not plural.

That ending can be confusing because płatności can look plural, but in this sentence it is genitive singular because it depends on termin.

So here it means:

• of payment, not payments

Polish often has forms that look identical across different cases and numbers, so you have to use context and sentence structure.

In a normal full sentence, jest is the standard choice.

• Termin płatności jest jutro. = normal, complete sentence

Polish does sometimes omit words in headlines, notes, labels, or very informal shorthand, for example:

• Termin płatności: jutro.

But in standard speech or writing, jest is natural here.

Because Polish has no articles.

English uses:

• the due date
• a due date

Polish does not have direct equivalents of the or a/an.
So termin płatności can mean:

• the payment due date
• a payment due date

Context tells you which meaning is intended.

Because jutro by itself already means tomorrow.

In this sentence, jutro works naturally without a preposition:

• Termin płatności jest jutro.

Na jutro is used in other patterns, for example when something is assigned, planned, or due for tomorrow:

• Mam pracę domową na jutro. = I have homework for tomorrow.
• Spotkanie jest zaplanowane na jutro. = The meeting is scheduled for tomorrow.

So in your sentence, plain jutro is the natural choice.

Polish word order is fairly flexible, but not every version sounds equally natural.

The given sentence:

• Termin płatności jest jutro.

is a neutral, clear order.

You may understand other orders, but they can sound more marked or less natural depending on context. Polish often changes word order to shift emphasis, not basic meaning.

If you want to stress tomorrow, you would usually do that with intonation or use a different phrasing rather than just rearranging the words mechanically.

The sentence is correct and natural, but there are other common ways to express the same idea, especially in formal or business Polish.

For example:

• Termin płatności przypada jutro. = The due date falls tomorrow.
• Jutro mija termin płatności. = The payment deadline expires tomorrow.
• Płatność jest należna jutro. = The payment is due tomorrow.

The original sentence is simple, direct, and perfectly good for learners.

A rough English-style approximation is:

• TEHR-meen pwaht-NO-shchee yest YOO-troh

A few key sounds:

• ł sounds like English w
  • płatności begins roughly like pwa-
• j sounds like English y
  • jest sounds like yest
  • jutro starts like yoo-
• ś/ści is a soft hushing sound, somewhat like shch, but softer

This is only approximate, but it is a useful starting point.

Yes. Termin zapłaty is also very common and often means almost the same thing.

Compare:

• termin płatności = payment due date / payment deadline
• termin zapłaty = deadline for paying / date by which payment must be made

In many real-life contexts, they are very close in meaning.
Termin płatności often sounds a bit more formal or business-like, but both are common and useful.