I don't do any international, all US based. I keep track of all my expenses (credit cards and banks accounts) and tag them using Quickbooks Self Employed. It ev

I don't do any international, all US based. I keep track of all my expenses (credit cards and banks accounts) and tag them using Quickbooks Self Employed. It even estimates federal quarterly taxes and allows me to make quarterly online payments using EFTPS.gov. At tax time it exports everything into TurboTax which saves a ton of time on deducations and reporting my quarterly federal tax payments.