How can I make it so that I can invoice internationally not just in GBP?

Hello Bollebespoke-gma, Welcome to the Community. The ability to invoice in foreign currency is available on our Essentials and Plus packages so it may be a case of upgrading if you are on Simple Start for example  You can then turn on multi-currency in the settings cog in the top right>account and settings>advanced >currency. Once turned on it can not be turned off. You will then be able to invoice in a different currency, you will just need to set up the customer and in the set up it will ask how the customer will be paying and you can select the currency/the same for suppliers. Any questions just reply back on to this thread.

@bollebespoke-gma 

If you run a service company and want to offer payment options to international customers by credit card, you should explore this app.

https://get.practiceignition.com/quickbooks

Hi @bollebespoke-gma 

Just quote/invoice the Irish company in GBP rather than EUR.

In my experience most overseas buyers are equally happy to pay in GBP.