Short answer: Pay from your personal bank account or card, not your business account.
Quarterly estimated taxes go toward your individual income tax, which makes them a personal expense. This holds whether your practice is a sole proprietorship or an S corporation.
Pay from a personal account
Paying from your personal account keeps the payment out of your business books, where it would otherwise get misclassified as a business expense. Keeping it personal means your bookkeeping stays accurate and your tax picture stays clear.
If you can only pay from your business account
Sometimes paying from a personal account isn't an option. In that case, the order of steps matters:
- Take an owner's draw (also called an owner's distribution), which is money you move from your business account to your personal account.
- Pay the quarterly estimate from your personal account.
Recorded this way, the money shows up correctly as an owner's distribution in your books rather than a business expense. Paying the estimate straight from your business account skips that step and gets flagged for cleanup later.
What if I already paid a quarterly estimate straight from my business account?
It's a quick fix in your books. The payment gets reclassified as an owner's distribution rather than a business expense, so your records reflect it as personal money leaving the business. Going forward, moving the funds to your personal account first avoids that step.
A note for S corporations
Depending on your location, an S corporation may also owe state franchise or excise taxes. These are separate from your personal quarterly estimates and follow their own rules. For details, see Quarterly tax estimates for S corporations.