Increasing Charge due to late payment

Assalaamu allaykum.
Duas Mufti Saheb is well.

Is it jaiz to charge a customer a higher price than normal due to the fact that payment terms are being provided and he takes longer than the stipulated time to pay.
Bearing in mind the price is fixed before the transaction and the extra amount is “not” added at a later stage.

Shukran

Answer

Assalaamu alaykum wa rahmatullahi wa barakaatuh

Your email below refers.

It is permissible by mutual consent.

And Allah Taäla knows best.

Was salaam

Emraan Vawda