Your company name, address and VAT number are yours to edit — you don't need to write to us. Update them once, and every invoice issued from then on carries the new details.

Only account Owners can edit billing data; the Billing tab is hidden for members.


Update your billing details

  1. Click your name at the bottom of the left sidebar and choose Settings.

  2. Open the Billing tab. The first section is Billing address.

  3. Fill in the fields:

    • First name *

    • Last name *

    • Company name

    • Street address *

    • City *

    • Postal code *

    • Country *

    • EU VAT number

    The fields marked with * are required; if one is empty the form says Please fill in all required fields.

  4. Click Save billing address. You'll see Billing address saved.

That's all — your next invoice uses the new data.


Tip: if you are a VAT-registered company inside the EU, fill in the EU VAT number field. It is used when your invoice is calculated, so it is worth setting before your next payment rather than after.


An invoice that has already been issued

We cannot rewrite an invoice that is already out. If the details were wrong on one you have received, send us the Order number from Settings → Billing → Invoice history at support@optimonk.com (or start a live chat), tell us what should be on it, and we will issue the corrected invoice for you.