Korea New Card Merchant Fee Refund Calculator

Recalculate credit and debit card fees using your confirmed 2026 H2 preferential tier, then reconcile estimated refunds with receipts by acquirer.

Korea: 2026 H2 new-merchant refund reconciliation

Inputs and results currently show a fictional example. Replace them with your confirmed tier and statements. Direct merchants only; this tool does not determine eligibility.

Verified: 2026-09-20 · This notice: planned refund deadline / lookup begins: 2026-09-28

1. Selection and settlement period

Opening window: 2026-01-01 to 06-30. Eligible sales run from opening through 08-13. A partial period estimates only that period; amounts are not prorated.

2. Actual settlement by acquirer

Use whole KRW (0–10 billion per amount). Enter cancellation-adjusted sales and the original card fees for the same period. Put refunds already received only in the received field. Exclude terminal, VAN and PG costs. Combine each acquirer into one row.

Acquirer 1

★ Estimated refund for entered period

495,000 KRW

2026-01-01 ~ 2026-08-13 · Up to KRW 300 million

Credit 0.4% · Debit 0.15%

Refund already received

200,000 KRW

Amount to reconcile

295,000 KRW

Received above estimate

0 KRW

Entered sales: 30,000,000 KRW · Paid fees: 590,000 KRW · Preferred-rate recalculation: 95,000 KRW

Differences do not establish an unpaid refund or repayment liability. Whole-KRW rounding by card type may differ from transaction-level settlement. Excess receipts at one acquirer do not offset another acquirer’s amount to reconcile.

A · Acquirer reconciliation

Credit preferred fee / refund
80,000 KRW / 360,000 KRW
Debit preferred fee / refund
15,000 KRW / 135,000 KRW
Expected / received
495,000 KRW / 200,000 KRW
To reconcile / above estimate
295,000 KRW / 0 KRW
Official CREFIA merchant lookup

Reconcile a new merchant’s card fee refund

This calculator estimates a Korean new card merchant’s retrospective fee adjustment using a confirmed preferential tier and actual settlement records.
It separates credit-card and debit-card sales, recalculates fees, and compares the estimated refund with money already received from each acquirer.
All amounts are in KRW under the 2026 H2 Korean notice; this is not a global card-processing fee calculator.

A worksheet for a first preferential-tier notice

A newly opened restaurant, shop or salon receiving direct card settlements can organize its records here.
Bank deposits alone may mix sales settlements, cancellations and refunds.
The worksheet helps reconcile those records; it does not select eligible merchants, submit applications or establish a payment entitlement.
Confirm the final amount through CREFIA and your acquirer.

Scope of the 2026 H2 notice

Opening and sales window

The model covers direct merchants newly opened from 2026-01-01 through 2026-06-30 and subsequently confirmed for the relevant preferential tier and new-merchant refund.
The preferential rates apply from 2026-08-14, and retrospective sales run from opening through 2026-08-13.
Do not include pre-opening sales or sales already charged the new rate after that window.

Refund and lookup dates

The FSC notice dated 2026-08-11 announces refunds planned by 2026-09-28 and total-refund lookup from the same date.
These dates belong to this notice, not every future half-year.
A merchant that opened and closed during the first half can still be included under the notice; closure alone is not a reason to replace its refund with zero.

The confirmation checkbox records your own verification of the official selection notice.
It does not make you eligible or send information to an agency.
An opening date outside this window, unconfirmed selection or a PG/taxi settlement channel holds the result instead of displaying a misleading zero refund.

Confirmed annual-revenue tiers and rates

2026 H2 Korean credit-card and debit-card preferential fee rates by confirmed annual revenue
Confirmed annual revenueCreditDebit
Up to KRW 300 million0.40%0.15%
Over KRW 300m to 500m1.00%0.75%
Over KRW 500m to 1 billion1.15%0.90%
Over KRW 1bn to 3 billion1.45%1.15%

Select the tier confirmed by the notice, not a tier guessed from the card sales entered here.
Article 6-13 of the Enforcement Decree addresses annualization for a business operating for less than a year and aggregation across multiple merchant locations; Article 25-5 of the supervisory regulation sets further assessment rules.
Cash sales and other locations can matter to the official assessment.
This calculator deliberately does not infer the tier from future revenue or partial card receipts.

Prepare three sets of records

Selection notice and dates

Check selection for this new-merchant refund, the confirmed tier, opening date and the exact settlement start and end.
A partial period is allowed but only estimates that entered period.
Dates validate and identify the scope; the calculator never prorates sales or fees by days.

Original settlements by card type

Enter cancellation-adjusted credit and debit sales and the corresponding original fees paid to each acquirer.
If a statement already shows net sales, do not subtract cancellations a second time.
Adjust the associated fees consistently.
Negative net sales, or fees left in a zero-sales period because of earlier transactions, need transaction-level reconciliation outside this model.

Refund deposits for the same scope

Record refunds already received only in the received field.
Do not first reduce original fees by the refund and then enter that refund again: that subtracts it twice.
A combined credit/debit refund can be entered once for its acquirer, provided it covers the same period and business.
Use acquirer names; business registration and bank account numbers are unnecessary.

Calculation sequence

For each acquirer and card type

  1. Preferred fee = net sales × preferential percentage ÷ 100, rounded to whole KRW
  2. Type-specific refund = max(0, original fees paid − preferred fee)
  3. Acquirer’s expected refund = credit refund + debit refund
  4. Amount to reconcile = max(0, expected refund − received for the same scope)
  5. Received above estimate = max(0, received − expected refund)

If paid fees fall below the preferred-rate recalculation, that card type has a zero modeled refund and a warning to check the records.
This does not establish a requirement to pay extra fees: the actual rate may be lower or the scopes may differ.
Rounding is done on aggregate sales separately by acquirer and card type; transaction-level or daily settlements can produce different amounts.
The estimate is therefore not a guarantee of the exact bank deposit.

How to use and save the worksheet

  1. Replace the fictional example with your records and select the settlement channel.
  2. Use the confirmed tier and match opening and settlement dates.
  3. Combine each acquirer into one row, separating credit and debit sales and fees.
  4. Enter only refunds received for the same scope.
  5. Calculate and review both totals and individual acquirer differences.
  6. Save the TXT reconciliation beside the statements and bank deposit records.

Changing an input hides the old result until you calculate again.
Duplicate acquirer names, blank amounts and fees exceeding sales are invalid.
The interface accepts one to ten acquirers and whole-KRW amounts from zero to 10 billion per field; this is an input safety limit, not a statutory eligibility threshold.
The saved file includes the verification date, tier, period, inputs and results so the calculation can be traced later.

Official and mixed-card worked examples

FSC example: credit cards only

KRW 140,000,000 of credit-card sales at an original 2.2% rate means KRW 3,080,000 of fees paid.
The confirmed micro-merchant credit rate of 0.40% gives KRW 560,000 in recalculated fees and a KRW 2,520,000 refund.
This preserves the official example’s assumption that every sale uses a credit card; it is not an average or a promise for your shop.

Fictional example shown in the interface

Assume credit sales of KRW 20,000,000 with KRW 440,000 paid, and debit sales of KRW 10,000,000 with KRW 150,000 paid.
The micro-tier preferred fees are KRW 80,000 and KRW 15,000.
The two refunds, KRW 360,000 and KRW 135,000, sum to KRW 495,000.
After KRW 200,000 already received, KRW 295,000 remains to reconcile.
These fictional inputs are not standard sales or market fee benchmarks.

Interpret the different result amounts

Expected refund versus reconciliation balance

The expected refund is before subtracting previous receipts.
The reconciliation amount is the positive difference for each acquirer.
Before the announced refund date it may simply represent a payment still being processed.
Incomplete bank records or mismatched periods also create differences.
Even after the date, verify the detailed settlement before describing a balance as an unpaid entitlement.

Received above estimate

A larger receipt appears separately; it does not prove an overpayment or repayment liability.
One acquirer’s excess never offsets another’s positive balance.
If one deposit includes a different period, an overall total can look correct while both acquirer records still need checking.
Keep the differences separate until their causes are understood.

Practical situations and input limits

Several acquirers pay on different days

Match transaction periods and settlement categories before comparing deposit dates.
Combine the same acquirer’s credit/debit records in one row.
Exclude terminal rental, VAN charges, communications charges, PG service fees and their separate VAT; they are not the original card fees used by this model.

A shop has already closed

Check official selection and refunds even if no paper notice reached the closed address.
Use real historical transactions and deposits.
Do not fill inactive months with invented average sales.
Ask the acquirer about account-handling issues.

Only part of the statements is available

A shorter period gives a partial estimate.
A whole-period refund cannot be directly compared with a partial-period estimate.
Either identify receipts for exactly that scope or collect the full set of statements before reconciliation.
The calculator does not allocate a lump-sum receipt automatically.

Frequently asked questions

Do low sales automatically qualify me?

No eligibility determination is made here.
First confirm selection for this half-year’s new-merchant refund and the preferential tier from an official notice.

Can an online store using a PG use this model?

PG sub-merchants are also discussed in the notice, but this direct-merchant worksheet excludes them.
Ask the PG provider for the separated card fee and refund details.

What if I do not know the original fee rate?

Enter actual original card fees paid from the statement.
Avoid inventing an average percentage to substitute for those records.

Can I combine debit and credit sales?

No, their preferential rates differ.
Obtain a breakdown from the acquirer before calculating.

Why enter original fees after receiving a refund?

Original fees calculate the total expected refund, then previous receipts are reconciled separately.
Using fees already reduced by the refund can subtract the same receipt twice.

Is a closed shop excluded?

The notice can include merchants that opened and closed during the first half.
Check official selection and historical records rather than replacing the estimate with zero.

Must I return money received above the estimate?

That difference alone does not establish a repayment obligation.
Check period, aggregate rounding, actual rates and cancellation treatment.

Can I reuse these dates next half-year?

This page uses the 2026 H2 notice.
Recheck the opening window, rate start, refund dates and rates in the next official notice.

Official evidence and update basis

Verified on 2026-09-20 through the National Law Information OPEN API and the FSC notice.
These Korean rules and dates are the same evidence used by the Korean calculator.

Save the worksheet, then check the official details

Compare the TXT file with acquirer statements and bank receipts.
For a remaining difference, ask about the exact period, card type, cancellation treatment and transaction-level refund calculation.
Use this as a card-fee reconciliation record, not as business profit, a tax refund calculation or a final payment notice.

Open the official CREFIA merchant sales and refund lookup

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