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EOB Patient Balance Calculator

Estimate patient balance from EOB responsibility fields, prior patient payments, and adjustments.

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Inputs

$
$
$

Your values stay on this device.

Results

Remaining Patient Balance
Total EOB Responsibility$160.00
Payments + Adjustments$30.00
StatusBalance remains

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Assumptions

  • All amounts apply to the same encounter or claim.
  • The calculator does not determine whether balance billing is allowed.
  • Values are processed locally only.

Sensitivity preview

Deductible Amount -10%: Remaining Patient Balance $120.00

Deductible Amount Current: Remaining Patient Balance $130.00

Deductible Amount +10%: Remaining Patient Balance $140.00

Formula: Remaining patient balance = deductible + coinsurance + copay + non-covered amount - prior patient payments - patient adjustments.

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About this EOB Patient Balance Calculator

An EOB can split patient responsibility across deductible, coinsurance, copay, and non-covered amounts. This calculator combines those fields into a clear estimated balance.

Who this calculator is for

  • Patient billing teams.
  • Front-desk staff explaining balances.
  • Patients reviewing EOB math before calling a practice.

When to use it

  • Calculate remaining balance after EOB posting.
  • Subtract payments already collected.
  • Separate non-covered amounts from cost-sharing amounts.

How to use this calculator

  1. Enter deductible, coinsurance, copay, and non-covered amounts.
  2. Add prior patient payments and adjustments.
  3. Review remaining patient balance.

Key assumptions

  • All amounts apply to the same encounter or claim.
  • The calculator does not determine whether balance billing is allowed.
  • Values are processed locally only.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

Total responsibility = deductible + coinsurance + copay + non-covered amount. Remaining balance = total responsibility - prior patient payments - adjustments.
Remaining patient balance = deductible + coinsurance + copay + non-covered amount - prior patient payments - patient adjustments.

Inputs explained

EOB responsibility fields

Amounts assigned to the patient on the payer remittance or EOB.

Prior patient payments

Copays, deposits, or payments already collected.

Adjustments

Courtesy, financial assistance, or other approved reductions.

Understanding your results

A remaining balance above zero may be billable if supported by the EOB, payer rules, and organizational policy.

Example scenarios

Posted EOB

$100 deductible + $40 coinsurance + $20 copay - $30 already paid gives a $130 estimated remaining balance.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Tips & Best Practices

  • Confirm contractual and regulatory balance-billing limits.
  • Match payments to the same encounter before billing.
  • Document adjustments separately from payer contractual write-offs.

Frequently Asked Questions

Can this determine if a balance is legally billable?
No. It only estimates arithmetic from EOB fields.
Should contractual adjustments be entered here?
No. Contractual adjustments usually reduce allowed amount before patient responsibility; use this for patient-side adjustments.
Are EOB values stored?
No. The calculation runs locally.