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Quickbooks for a startup makes a lot of sense. Pretty much any accountant you would hire has basic familiarity with it.

Invoicing is built in, with a payments option you can turn on. Easy to set up and decent API and starter apps.

I would also add Carta if you have or want investors. Keeping good records of the cap structure from the start is so much easier than trying to fix it later.

For simple accounting stuff, you can also checkout Frappebooks: https://frappebooks.com/

It's from the same folks behind ERPNext.

ERPNext is a really excellent but mysteriously unknown system for accounting, CRM, and project management.