Tot i que és car, pagaré el rebut domiciliat.

Tot i que means although / even though. It introduces a contrast:

• Tot i que és car = Although it is expensive

In this sentence, it sets up the idea that something is expensive, but the speaker will still do it.

It is a very common Catalan connector for concessions, similar to English although.

Catalan often leaves out subject pronouns when they are not needed, because the verb form already gives enough information.

So:

• és car literally looks like is expensive
• in natural English, we understand it as it is expensive

The it is implied rather than stated. This is very normal in Catalan.

Car means expensive.

So:

• és car = it is expensive

Be careful not to confuse this with English car. They are unrelated words.

Also, car agrees in number and gender when needed:

• car = masculine singular
• cara = feminine singular
• cars = masculine plural
• cares = feminine plural

In this sentence, the thing being referred to is masculine singular, so car is the correct form.

Pagaré is the future simple of pagar:

• jo pagaré = I will pay

Catalan often drops the subject pronoun jo, so just pagaré is enough.

This ending -é tells you it is:

• first person singular
• future tense

So the sentence means the speaker intends to pay it in the future.

Rebut means bill, invoice, or payment notice, depending on context.

Domiciliat in banking language means something like set up for direct debit or paid through a bank account automatically.

So el rebut domiciliat refers to:

• the direct-debit bill
• or the bill set up for automatic bank payment

This is a useful financial expression in Catalan and Spanish contexts.

In Catalan, adjectives often come after the noun.

So:

• rebut domiciliat = direct-debit bill

This is the normal order:

• noun: rebut
• adjective: domiciliat

English often puts descriptive words before the noun, but Catalan very often places them after it.

Yes, in many cases tot i que and encara que can both mean although / even though.

For example:

• Tot i que és car, pagaré el rebut domiciliat.
• Encara que és car, pagaré el rebut domiciliat.

Both are possible.

That said, tot i que is often felt as a very direct equivalent of although, while encara que can sometimes overlap with even if, depending on context. In this sentence, both work well.

The comma separates the concessive clause from the main clause:

• Tot i que és car, = subordinate clause
• pagaré el rebut domiciliat. = main clause

This punctuation helps show the contrast clearly, much like in English:

• Although it is expensive, I will pay the direct-debit bill.

It is the normal way to write this kind of sentence.

Yes, historically it is related to the idea of an address or domicile, but in banking usage it has a specialized meaning.

In everyday financial Catalan, domiciliar a payment means to link it to a bank account so it is paid automatically. So domiciliat here does not mean at home. It means something like:

• bank-authorized
• set up by direct debit
• automatically charged to an account

So this is a banking term, not a literal home-related meaning.

Yes, depending on context, native speakers might also say things like:

• Tot i que és car, pagaré el rebut.
• Encara que sigui car, pagaré el rebut domiciliat.

The version with sigui uses the subjunctive and can sound slightly more hypothetical or general in some contexts.

But your original sentence, Tot i que és car, pagaré el rebut domiciliat, is perfectly understandable and grammatically fine.