ERAs to deposits: the reconciliation that catches missing money

Match every ERA to its deposit, not just the total

Reconciling ERAs to bank deposits means confirming that every dollar a payer says it paid you actually landed in your account, and that every dollar landing in your account has an ERA explaining it. Comparing your month-end bank balance to your month-end billing total isn't reconciliation — it can hide a missing payment and an overstated one at the same time, since they cancel each other out in the aggregate.

The unit of reconciliation is the individual deposit, not the month. Each ACH deposit from a payer should tie back to one or more specific ERAs whose total matches it exactly — and when a payer batches several claims' payments into a single deposit, you need every one of those ERAs accounted for, not just a total that happens to look right.

Enroll for ERA/EFT so you're not working from paper

If you're still posting from paper EOBs or manually keying remittance data, start there: era/eft enrollment with each payer gets you structured electronic remittance files and electronic deposits instead, which is what makes line-by-line matching practical rather than a manual transcription exercise. Most major payers and clearinghouses support electronic enrollment, and it's typically a one-time setup per payer, not a recurring task.

Until every payer you work with is enrolled electronically, you're reconciling two different systems side by side — paper for some payers, electronic for others — which is exactly the kind of split process where a claim quietly falls through. Prioritize enrollment with your highest-volume payers first; the return on that setup time is immediate.

Keep a short list of which payers are enrolled and which aren't, and revisit it whenever you add a new payer contract — enrollment doesn't happen automatically just because you're in-network, and a newly contracted payer defaulting to paper EOBs is an easy thing to miss until the first reconciliation cycle turns up a gap.

Reading the remit before you reconcile

Before you can match an ERA to a deposit, you have to read it correctly — the total payment amount on the ERA, not the billed charge, is what should tie to the bank. reading remits covers the line-by-line structure in full, but the piece that trips people up most in reconciliation is treating every reduction on the ERA the same way.

A contractual adjustment, commonly flagged CO-45, brings your charge down to the contracted rate and is expected — co-45 is not a denial and shouldn't be treated as a reconciliation problem on its own. What you're actually hunting for is the payment amount after those expected reductions, matched dollar for dollar to what hit your account.

The two mismatches that mean money is missing

Two patterns show up in a real reconciliation, and both mean something needs chasing. An ERA says a claim was paid but no matching deposit ever appears — the money may be delayed, misrouted, or simply never sent. Or a deposit appears with no ERA to explain it — a payment landed, but you don't yet know which claims it covers, which is its own kind of problem if it sits unposted.

A third pattern is quieter and easier to miss entirely: the ERA and the deposit both show up and match each other, but the payment itself is lower than your fee schedule says it should be. underpayments walks through how to check the paid amount against your actual contracted fee schedule — that comparison is the only way to catch a systematic underpayment that a simple deposit-matching check would sail right past.

Keep a short running log of every mismatch you find, even the ones you resolve the same day — the date, the claim or payer involved, and how it was closed out. A single missing deposit is a nuisance; a log that shows the same payer generating mismatches month after month is a pattern worth a phone call to that payer's provider-relations line, not another one-off fix.

Recording it on your books

Once a deposit and its ERAs match, post the payment, the contractual adjustment, and any patient responsibility to their own separate accounts — never as one lump 'insurance income' entry. write-offs covers why contractual adjustments and genuine bad debt need to stay in different buckets, and the same discipline applies here: a deposit reconciled sloppily just moves the confusion downstream to your bookkeeping.

A chart of accounts should already have separate lines for clinical revenue, contractual adjustments, and patient payments before your first reconciliation. Getting deposits categorized correctly as they're reconciled is also what keeps your Schedule C accurate, since collected revenue — not billed charges — is what actually gets reported 1Ref 1Internal Revenue Service (2026).Self-employed individuals tax center.That practice revenue is reported on Schedule C, the reason accurate deposit-level reconciliation matters beyond bank hygiene..

Posting promptly matters as much as posting correctly: a stack of matched-but-unposted ERAs sitting for weeks is its own kind of risk, since it delays the moment you'd actually notice a discrepancy in what your books say you've collected. Post the same day you reconcile, even if categorization gets refined later — an approximate entry today beats a perfect one three weeks from now.

How often to reconcile, and what to keep

Reconcile weekly, or at minimum every time a deposit clears, rather than batching the work to month-end — a stalled claim caught in week two still has time to appeal or resubmit; one discovered at month-end may already be close to a payer's filing deadline. why are payroll tax deposits sacred covers the same seriousness applied to 941 deposits; treat an unreconciled ERA deposit the same way — it's money you can't actually prove you have until it's matched.

Keep the ERA files, deposit confirmations, and your matching worksheet for as long as you retain other financial records 2Ref 2Internal Revenue Service (2026).Recordkeeping.The financial-record retention window that applies to ERA files and reconciliation worksheets., since that's the trail an examiner would expect to see if a number is ever questioned 3Ref 3Internal Revenue Service (2026).IRS audits.That an examiner expects a documented trail behind reported revenue, supporting why the reconciliation record itself is worth keeping.. If a payer's post-payment review asks for documentation behind a paid claim, properly authenticated encounter notes — not just the payment record — are what counts as valid support 4Ref 4Centers for Medicare & Medicaid Services (2023).Complying with Medicare Signature Requirements.What counts as valid authenticated documentation behind a paid claim if a payer's post-payment review requests it..