When you pay your quarterly estimated taxes with Found, Found will send you an email notification that your payment has been processed. This notification should be kept for your records as proof of tax submission. You can verify that the IRS has received your payment by checking your IRS Online Account.
Payments typically take around two weeks after Found processes them to appear on the IRS portal—so not seeing the payment right away is expected and doesn't mean anything is wrong. If you file a joint return, the payment is credited to the primary taxpayer (the spouse listed first on Form 1040), so check that account if you don't see it on your own.
