Prorratearán el saldo pendiente.

Prorratearán is the 3rd person plural simple future of prorratear.

• prorratear = to prorate / to apportion proportionally
• prorratearán = they will prorate or you all will prorate (depending on context)

So the ending -án tells you it is:

• future tense
• 3rd person plural: ellos/ellas/ustedes

The accent mark in prorratearán shows where the stress goes: pro-rra-te-a-RÁN.

This is normal in the simple future:

• prorratearé
• prorratearás
• prorrateará
• prorratearemos
• prorratearéis
• prorratearán

Without the accent, the word would not follow standard Spanish stress rules, so the written accent is necessary.

The subject is not stated explicitly, but the verb ending tells you it is they or you plural.

So prorratearán el saldo pendiente could mean:

• They will prorate the outstanding balance
• You all will prorate the outstanding balance

In most business or administrative contexts, it will usually mean they unless the wider context shows it is addressing ustedes.

Spanish often omits subject pronouns because the verb ending already tells you who the subject is.

So instead of saying:

• Ellos prorratearán el saldo pendiente

Spanish very naturally says:

• Prorratearán el saldo pendiente

This is completely normal and often sounds more natural than including the pronoun.

Not exactly. Prorratear is more specific than just dividir.

It usually means:

• to distribute an amount
• proportionally
• according to some rule, period, share, or usage

For example, in bills, fees, rent, or accounting, prorratear suggests that the amount is being split in a calculated way, not just cut into equal pieces.

So:

• dividir = divide
• repartir = distribute
• prorratear = prorate / apportion proportionally

Saldo pendiente is a noun phrase:

• saldo = balance
• pendiente = pending / outstanding / still due

Together, it means something like:

• outstanding balance
• balance still pending
• unpaid balance

In financial Spanish, pendiente often means not yet settled, paid, or resolved.

In Spanish, adjectives often come after the noun, especially when they are describing a factual characteristic.

So:

• saldo pendiente = outstanding balance

This is the normal word order. Putting the adjective after the noun is the expected pattern here.

Yes, it sounds fairly formal and especially typical of:

• accounting
• contracts
• invoices
• customer service
• banking
• administrative language

A more everyday sentence might use something less technical, depending on the situation. But prorratearán el saldo pendiente sounds very natural in professional or financial Spanish.

A rough pronunciation guide is:

pro-rra-te-a-RÁN

A few key points:

• The rr is a strong rolled r
• The stress is on the last syllable: -rán
• The sequence -tea- is pronounced as separate vowels, not compressed into one English-like sound

So it is roughly: pro-rra-te-a-RÁN

The form prorratearán is the simple future, so its basic meaning is indeed will prorate.

In Spanish, the future can sometimes also express probability or conjecture, but in a sentence like this, especially in a financial context, it is most likely a literal future action:

• They will prorate the outstanding balance

Yes. That is another correct way to express the future.

• Prorratearán el saldo pendiente = simple future
• Van a prorratear el saldo pendiente = going to + infinitive

Both are grammatical. In many real-life conversations, ir a + infinitive is very common. The simple future often sounds a bit more formal, official, or written, which fits this sentence well.

People in Spain do use prorratear, but it is mainly heard in business, finance, billing, employment, rent, and administrative contexts.

For example:

• prorated rent
• prorated salary
• fees distributed over months
• shared costs divided proportionally

In everyday casual speech, people might choose a simpler verb if they are not being technical. But in Spain, prorratear is absolutely a real and normal word in the right context.