La facture d’électricité indique le montant dû.

Because de becomes d’ before a word that starts with a vowel or silent h.

So:

• de + électricité → d’électricité

This is called elision. French does this to make pronunciation smoother.

You will see the same thing in many other phrases:

• un verre d’eau
• le prix d’entrée
• beaucoup d’argent

Facture is a feminine singular noun, so it takes the definite article la.

• la facture = the bill / the invoice

In French, nouns have grammatical gender, so you must learn the noun together with its article whenever possible.

For example:

• la facture
• le montant
• l’électricité

Because électricité is feminine, so its article is normally la, but before a vowel sound, la becomes l’.

So:

• la électricité → l’électricité

This is another example of elision.

Not always. Facture can mean bill or invoice, depending on context.

For everyday utilities, like electricity, water, or internet, facture is often best understood as bill.

Examples:

• la facture d’électricité = the electricity bill
• la facture de téléphone = the phone bill

In business contexts, it may be closer to invoice.

French often expresses this idea with noun + de + noun, where English might use a noun as an adjective.

So French prefers:

• la facture d’électricité = the electricity bill

rather than:

• la facture électrique

Also, électrique usually means electric in the sense of being powered by electricity, not related to electricity billing. So la facture électrique would sound unnatural here.

Indique is the third-person singular present tense of the verb indiquer.

Here it matches the subject la facture, which is singular.

So:

• indiquer = to indicate / to show / to state
• la facture indique = the bill indicates / shows / states

Other present-tense forms include:

• j’indique
• tu indiques
• il/elle indique
• nous indiquons
• vous indiquez
• ils/elles indiquent

Because the sentence means that the bill actively shows or states something.

• La facture indique... = The bill indicates...
• ...est indiqué = ...is indicated

These are different structures:

• La facture indique le montant dû.
  • The bill indicates the amount due.
• Le montant dû est indiqué sur la facture.
  • The amount due is indicated on the bill.

Both are correct, but they are built differently.

Montant means amount or sum.

In financial contexts, it is very common:

• le montant total = the total amount
• le montant de la facture = the amount of the bill
• le montant dû = the amount due

It is a masculine noun, which is why it uses le.

The word dû is the past participle of devoir when it means owed or due.

The circumflex helps distinguish it from du, which is very common and usually means:

• some / any (partitive article)
• or of the = de + le

Compare:

• le montant dû = the amount owed / due
• du pain = some bread
• le livre du professeur = the teacher’s book / the book of the teacher

So the accent is important here.

Because in French, adjectives often come after the noun, and dû does here.

So:

• le montant dû = the amount due

This is normal French word order. English often puts adjectives before the noun, but French frequently places them after.

Other examples:

• une maison blanche = a white house
• un paiement immédiat = an immediate payment
• la somme totale = the total sum

Yes. Dû agrees in gender and number with the noun it describes.

Here:

• montant is masculine singular
• so we use dû

Other forms would be:

• dû = masculine singular
• due = feminine singular
• dus = masculine plural
• dues = feminine plural

Examples:

• le montant dû
• la somme due
• les montants dus
• les sommes dues

Not in the same way. Le montant dû is the normal expression for the amount due / owed, especially on a bill.

Le montant de la dette means the amount of the debt, which is more specific and not the usual wording on an ordinary bill.

So if you are talking about what must be paid on an invoice or utility bill, le montant dû is the natural phrase.

A careful pronunciation would be approximately:

la fak-tyr day-lek-tree-see-tay an-deek luh مون-tan dew

More naturally in French pronunciation:

La facture d’électricité indique le montant dû.

A few useful points:

• facture: the u sound is the French u, not the English oo
• d’électricité links smoothly because of the elision
• indique ends with a k sound: in-deek
• dû is pronounced like a long French u sound, not like English doo

If you want, I can also break the whole sentence down syllable by syllable.

Yes. Even if the meaning is already clear, the French sentence could correspond to several natural English versions, depending on context:

• The electricity bill shows the amount due.
• The electricity bill states the amount owed.
• The electricity bill indicates the amount payable.

The French itself is straightforward, but English may choose shows, states, or indicates depending on tone.