رسوم التركيب في الفاتورة.

In Arabic, the verb to be is usually not written in the present tense.

So a phrase like:

• رسوم التركيب في الفاتورة

  can mean something like:

• The installation fees are in/on the invoice

The idea of are is understood automatically. If you wanted to make it more explicit, you could say:

• رسوم التركيب موجودة في الفاتورة
  The installation fees are موجودة / present / listed in the invoice

So the original is completely normal Arabic style.

Yes. رسوم التركيب is an iḍāfa (genitive construction), which is a very common Arabic structure.

It is made of:

• رسوم = fees / charges
• التركيب = the installation

Together:

• رسوم التركيب = installation fees

In English, we often say installation fees, where the first noun modifies the second. In Arabic, this relationship is commonly expressed through iḍāfa.

Because in an iḍāfa, the first word usually does not take الـ.

So:

• رسوم التركيب is correct
• الرسوم التركيب would be wrong in this structure

The definiteness comes from the second noun:

• التركيب = the installation

Because the second noun is definite, the whole phrase رسوم التركيب becomes definite as a unit.

So it works like this:

• رسوم تركيب = installation fees / fees for installation
• رسوم التركيب = the installation fees

رسوم usually means fees, charges, or costs, depending on context.

It is the plural of رسم, which can mean:

• fee
• charge
• tariff
• duty

In everyday and formal usage, رسوم is extremely common for things like:

• رسوم التسجيل = registration fees
• رسوم الشحن = shipping fees
• رسوم الخدمة = service charges

So in this sentence, رسوم is best understood as fees/charges.

The noun تركيب comes from a root related to putting together, assembling, or installing.

Depending on context, تركيب can mean:

• installation
• assembly
• fitting
• composition / structure

In a billing or invoice context, التركيب most naturally means installation.

So:

• رسوم التركيب = installation fees

Literally, في usually means in.

• في الفاتورة = in the invoice

But in English, we often say:

• on the invoice
• on the bill

Arabic often uses في where English might prefer in or on, especially with documents, lists, records, and written content.

So:

• في الفاتورة literally = in the invoice
• natural English = on the invoice

Both ideas point to the same thing: the fees are listed/shown in the invoice.

It can function as either, depending on context.

As written, رسوم التركيب في الفاتورة can be understood as:

1. a short nominal sentence
   = The installation fees are on the invoice

or

2. a heading / label / note on a form, bill, or screen
   = Installation fees on the invoice

Arabic often allows this kind of concise expression, especially in business, forms, menus, notices, and interfaces.

A simple pronunciation guide is:

• rusūm at-tarkīb fī al-fātūrah

A more natural connected pronunciation is often closer to:

• rusūm at-tarkīb fil-fātūrah

A few notes:

• رسوم = rusūm
• التركيب is written with ال, but because ت is a sun letter, it is pronounced at-tarkīb, not al-tarkīb
• الفاتورة keeps the l sound because ف is not a sun letter, so it is al-fātūrah

In fully vowelled formal Arabic, it would be:

• رُسُومُ التَّرْكِيبِ فِي الْفَاتُورَةِ

Here is why:

• رسومُ → nominative, because it is the subject/topic of the nominal sentence
• التركيبِ → genitive, because it is the second term of the iḍāfa
• الفاتورةِ → genitive, because it comes after the preposition في

In normal writing, these short vowel endings are usually omitted, so learners often just see:

• رسوم التركيب في الفاتورة

Arabic very commonly uses رسوم in the plural to mean fees/charges as a category.

This is similar to English, where businesses often say:

• fees
• charges
• costs

rather than just a fee

You could use the singular رسم in some contexts, but رسوم is much more natural for billing language.

Compare:

• رسم التركيب = the installation fee
• رسوم التركيب = installation fees / installation charges

If the invoice contains one specific single fee, the singular may fit. But in business Arabic, the plural is often the default wording.

Yes. تركيب is a flexible word, and its meaning depends on context.

Possible meanings include:

• installation
• assembly
• composition
• structure
• arrangement

For example:

• in mechanics or furniture: assembly / installation
• in grammar or chemistry: structure / composition

But since this phrase includes رسوم and الفاتورة, the billing context strongly suggests:

• installation fees

A few more explicit versions are:

• رسوم التركيب موجودة في الفاتورة
  The installation fees are listed in the invoice.

• تم إدراج رسوم التركيب في الفاتورة
  The installation fees have been included in the invoice.

• الفاتورة تشمل رسوم التركيب
  The invoice includes the installation fees.

The original phrase is shorter and more compact, which is very common in Arabic business language.

Because it has الـ, the definite article:

• فاتورة = an invoice / a bill
• الفاتورة = the invoice / the bill

So:

• في فاتورة = in an invoice
• في الفاتورة = in the invoice

In your sentence, it refers to a specific invoice, not just any invoice.