Weliswaar is uitleentydperke lank, maar vervaldatums verander nie.

Weliswaar means something like admittedly, granted, or to be sure. It introduces a concession: the speaker accepts one point first, and then gives a contrasting point after that.

So the structure is roughly:

Admittedly X, but Y.

It is a fairly formal or written-sounding word in Afrikaans, not the most casual everyday choice.

This is because Afrikaans normally follows a verb-second pattern in main clauses.

When a different element comes first — here weliswaar — the finite verb usually moves into second position:

• Weliswaar is uitleentydperke lank
• more neutral order: Uitleentydperke is weliswaar lank

So is comes before the subject uitleentydperke because weliswaar has been placed first.

In Afrikaans, the verb is does not change the way English is/are does.

So you get:

• Ek is
• Hy is
• Ons is
• Hulle is

That means uitleentydperke is is completely normal, even though uitleentydperke is plural.

It is a compound noun, which is very common in Afrikaans.

You can break it down like this:

• uitleen = lending / loaning out
• tydperk = period
• -e = plural ending

So uitleentydperke means loan periods or borrowing periods.

Afrikaans often writes compounds as one word where English would use two words.

This is a very common learner question.

In Afrikaans:

• lang is usually used before a noun
• lank is usually used after a verb or adverbially

Compare:

• lang uitleentydperke = long loan periods
• Die uitleentydperke is lank = The loan periods are long

So in this sentence, lank is correct because it comes after is and describes the length of the periods.

They form a concessive contrast:

• weliswaar = admittedly / granted
• maar = but

Together, they create the pattern:

Admittedly ..., but ...

So the sentence is saying:

• yes, the loan periods are long
• but the due dates do not change

This makes the second clause the important limitation or correction.

Vervaldatums is the plural of vervaldatum.

It can mean expiry dates in some contexts, but here — because the sentence is about lending periods — it most naturally means due dates.

It is also a compound:

• verval = lapse / expire / become due
• datum = date
• -s = plural ending

So vervaldatums = due dates.

Afrikaans negation often uses nie, and learners often expect two nie words everywhere. But in a simple clause like this one, a single final nie is normal:

• Vervaldatums verander nie. = Due dates do not change.

Because the clause ends there, the negation can simply appear at the end.

In other sentence patterns, Afrikaans may use a fuller nie ... nie structure, for example:

• Hy is nie hier nie.
• Dit verander nie maklik nie.

So the short answer is: verander nie is a normal way to say do not change here.

The comma separates two main clauses joined by maar:

• Weliswaar is uitleentydperke lank
• maar vervaldatums verander nie

This is similar to English punctuation before but when two full clauses are being linked.

Yes. The sentence is understandable as it stands, but weliswaar sounds formal. A more everyday wording might be:

• Uitleentydperke is lank, maar vervaldatums verander nie.
• Al is uitleentydperke lank, verander vervaldatums nie.

The exact choice depends on tone, but weliswaar definitely gives the original sentence a more formal written feel.