Customer Language

Every customer has an invoice language. Their invoices, estimates, emails, PDFs and pages are all written in it.

4 min read Updated November 2026 Invoicing

The short version

Set Invoice language on the customer. English and German are available today. You can also change it from the invoice editor, and your customer can switch it on their own page.

The language

What it changes

The invoice language is set per customer. For that customer it controls the words on:

  • the invoice and the estimate
  • the emails you send, including reminders
  • the PDF
  • the invoice page, the estimate page and the customer portal

Your own app stays in your own language. Only what your customer reads changes.

Which languages you can pick

Today you can choose English or German. A language only appears in the list once every customer page and email is fully translated into it, so nobody gets a half translated invoice.

A new customer starts in your own language. A customer saved before this setting existed also uses yours, which is what they were already getting.

Changing it

Change it on the customer

Open the customer and choose Edit. Pick a language under Invoice language and save. The hint reads: their invoices, estimates, emails and payment page are in this language. The customer page shows the language under New invoices start with.

Change it in the invoice editor

The customer card in the invoice editor shows Invoice language. Change it there and it is saved for the customer, with the note Saved for this customer. The preview and later invoices follow it.

When you send, the dialog says which language it goes out in: the email, PDF and invoice page are in that language.

The switcher on your customer's page

Your customer sees the invoice page in the language you chose. A menu there (DE or EN) lets them read it in the other language. Their choice carries through paying, downloading the PDF and reporting the invoice. It does not change the language saved for the customer.

Lines that Timelydo writes for you, for example from a booking or from tracked time, use the customer's language when the words exist in it. Words you type yourself stay as you typed them.
Help

FAQ

Q

Which languages are available?

English and German today. More appear by themselves once their invoice pages and emails are fully translated.
Q

Does changing the language change invoices I already sent?

Set the language before you send. An invoice that has gone out is fixed, like the rest of it. Change the language on the customer and the next invoice follows it.
Q

Can my customer read the page in another language?

Yes. The invoice page has a language menu. Their choice carries through paying, the PDF and reporting, and does not change the setting you saved.

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