The 1099-K: gross processing vs your net books

Why the 1099-K and your deposits never match

Three structural gaps separate the two numbers, and none of them is an error. The 1099-K reports gross — the full charge before the processor kept its fee, before you refunded anyone, and before a chargeback clawed money back. Your bank deposits are net of all three. The form also reports on the transaction date, so a session charged on December 30 that settles on January 2 lands in the wrong calendar year's deposits. And the 1099-K sees only card and processor traffic, so cash and paper checks are invisible to it.

So the mismatch is expected. The reconciliation is not "find the error" — it is "walk from the processor's gross number down to the net income your books already carry, showing every subtraction on its own line." Do that and the two views agree by construction.

• Gross, not net: the headline figure includes money you never banked.
• Timing: the form is charge-dated; your deposits are settlement-dated.
• Scope: cash, checks, and Zelle-style bank transfers are not on it.

Start from gross, not from your bank balance

Reconcile top-down: put the 1099-K gross figure at the top of the worksheet and subtract your way to net, rather than starting from deposits and trying to gross them back up. Starting from gross is the only direction that matches what the IRS received, because the gross number is the one the processor reported. Working the other way — adding fees back onto your deposits — invites arithmetic drift and leaves you unable to explain the total on the form.

A clean worksheet has four moving parts under the gross line: processing fees, refunds issued, chargebacks and reserves, and the December/January timing shift. Subtract each, and the bottom line should equal the card-and-processor portion of your income. Add your cash and check income separately — that piece was never on the 1099-K to begin with, so it lives on its own row. Keeping this as a standing monthly step in your bookkeeping means the annual reconciliation is a review, not an excavation.

The processing fee is a deduction, not missing money

The single largest gap is usually the processor's fee, and it is not lost income — it is a deductible expense. When a client pays for a session, the processor settles the charge minus its percentage; the 1099-K shows the full charge, your bank shows the remainder, and the difference is an ordinary and necessary business expense you deduct 1Ref 1Internal Revenue Service (2026).Guide to business expense resources.That processing fees are ordinary and necessary business expenses deductible against gross income, which is why gross-booking with a separate fee line reconciles to the 1099-K.. Recording the fee gross (full charge as income, fee as its own expense line) rather than net (only the deposit as income) is what makes the 1099-K tie out, because the form is built on the gross figure.

The practical rule: book the full charge as revenue and the fee as a separate expense. If you instead book only the deposit, your income will look understated against the 1099-K, and the reconciliation will never close. Merchant statements from your processor give you the fee total for the year — pull it once and the fee line is done. This is also why a gross vs net distinction is worth getting right in your chart of accounts from day one.

Refunds, chargebacks, and the December-January split

After fees, three smaller adjustments close most of the remaining gap. A refund you issued reduces your net deposits but not the 1099-K gross, so it needs its own subtraction. A chargeback — a client's card issuer reversing a charge — behaves the same way, sometimes with a reserve the processor holds back. And the timing shift captures charges that transacted in December but settled in the new year, or vice versa.

• Refunds: subtract the year's refund total; keep them out of the fee line so each is auditable.
• Chargebacks and reserves: subtract reversed amounts and any held reserve; note the date it releases.
• Timing: identify the late-December charges that banked in January and the prior-December charges that banked this January — they net against each other across years.

Work these on a monthly cadence and none of them is ever a surprise at filing. Left for April, they become a forensic reconstruction from a year of statements.

What to keep so the reconciliation survives review

Keep the four documents that let anyone rebuild the reconciliation: the 1099-K itself, your processor's annual and monthly statements, your bank statements, and your books. The IRS expects business records that substantiate what is on the return, and its guidance points to keeping supporting records generally for three years, longer where more is at stake 2Ref 2Internal Revenue Service (2026).Recordkeeping.IRS guidance on keeping the business records that substantiate reported income and the general retention periods, applied to the statements that prove the gross-to-net reconciliation.. For a reconciliation, the useful retention is however long the underlying return stays open — the statements are what prove the gross-to-net walk if the number is ever questioned.

Store them the same way each year. A single tax-season folder per year — the 1099-K, the December and January statements that show the timing split, the processor's fee summary, and your reconciliation worksheet — turns the whole exercise into pulling one folder. This is financial recordkeeping, distinct from clinical-record retention; the two run on different clocks and should not share a filing system.

How the reconciled number flows to your taxes

The reconciled net income is what drives your Schedule C, not the 1099-K gross. As a self-employed clinician you report business income on Schedule C and pay self-employment tax on the net earnings 3Ref 3Internal Revenue Service (2026).Self-employed individuals tax center.That a self-employed clinician reports business income on Schedule C and pays self-employment tax on net earnings, so the reconciled net rather than the 1099-K gross drives the return., so overstating income by reporting the gross figure would inflate both your income tax and your SE tax. The whole point of the reconciliation is to report the true net — full charges as income, fees and refunds as deductions — so the bottom line is correct.

That reconciled net also sets your quarterlies. Estimated tax is paid across the year on your actual net earnings, with safe-harbor rules keyed to your current- or prior-year liability 4Ref 4Internal Revenue Service (2026).Estimated taxes.That estimated tax is paid quarterly on actual net earnings under safe-harbor rules, tying the mid-year reconciliation to the size of the next estimated payment., so a mid-year reconciliation that shows income running ahead of plan is your cue to raise the next estimate rather than absorb a shortfall in April. Keeping the reconciliation monthly means your estimated payments track reality instead of last year's guess.