💳 Credit Card Cash Advance Installment Calculator

What is an installment cash advance, and what does this tool calculate?

A taksitli nakit avans (installment cash advance) is cash drawn against your credit card limit and repaid in equal monthly installments. Unlike a card purchase paid in installments, the cash accrues contractual interest from the day you draw it, and two Turkish charges are added on top of that interest: the Resource Utilization Support Fund (KKDF) and the Banking and Insurance Transactions Tax (BSMV).

From the advance amount, a term of 1–12 months and a monthly contractual rate, the tool calculates the monthly installment, total repayment, total interest, total KKDF and BSMV, the monthly and annual effective cost, and a month-by-month schedule of principal, interest, taxes and remaining principal. The whole result, including the schedule table, is visible below the form without opening anything.

Other card charges follow different rules: use Credit Card Installment Calculator for purchases paid in installments and Credit Card Late Payment Interest Calculator for unpaid balances; the cash advance rate is a separate rate.

How is the installment calculated?

The installment comes from a payment schedule in which interest and taxes are recalculated each month on the remaining principal. KKDF and BSMV are applied to each month's interest, not once to the advance amount or to the total interest.

1. The taxed monthly rate is found first: contractual rate × (1 + 15% KKDF + 15% BSMV), i.e. 1.30 times the contractual rate.
2. The level installment is computed with the standard equal-installment formula at that taxed rate and rounded to the kuruş; at a 0% rate it is simply principal ÷ number of months.
3. Each month, interest = remaining principal × contractual rate (rounded to the kuruş); KKDF = interest × 15%; BSMV = interest × 15%.
4. That month's principal = installment − interest − KKDF − BSMV, and the remaining principal falls by that amount.
5. The last installment settles the remaining principal and that month's taxes exactly, so any kuruş rounding differences end up in the final row and the remaining principal is zero.

The footer totals are the sum of the displayed rows, not a separately derived figure. That is why the last installment can differ from the others by a few kuruş.

Which interest rate should I choose?

There are two options. The first is the cash-advance maximum from the Central Bank of the Republic of Türkiye's (CBRT, or TCMB) table of maximum monthly contractual rates for card transactions: 4.25%, effective from 1 October 2026. It is a dated reference that does not show the rate your bank will give you and it can change in later periods. The second is the "Other" option, where you enter your own monthly contractual rate, for example the one printed on your statement or in the bank's pre-contract information form.

A custom rate may be 0%, in which case interest, KKDF and BSMV are all zero and the installments are just the principal divided evenly. If you enter a rate above 4.25% the tool still computes it but labels it a hypothetical scenario: that does not mean a bank can offer the rate or that it is lawful.

How should I read the results?

• Monthly installment and total repayment: tax-included, what you pay each month and in total by the end of the term.
• Total contractual interest (before taxes): only the bank's interest income; KKDF and BSMV are separate.
• Total financing cost: everything you pay above the amount drawn, i.e. interest + KKDF + BSMV.
• Total KKDF and BSMV: the taxes over the whole term. The "first installment only" lines show just the first month's tax, so the two must not be read as substitutes for each other.
• Monthly and annual effective cost: the internal rate of return of the kuruş-rounded payments in the schedule; the annual value is compounded as (1 + monthly)^12 − 1.

A contractual rate and an effective cost are different things. The contractual rate is interest only; the effective cost includes the taxes and reflects when each payment is made as the debt shrinks. A 4.25% monthly contractual rate therefore becomes roughly 5.525% a month once taxes are added and about 90.66% a year compounded; saying only 4.25 × 12 = 51% understates it.

Example: 10,000 TL, 6 months, 4.25% a month

Splitting a 10,000 TL cash advance into 6 installments at the CBRT reference rate, the tool shows:

• The first five installments are 2,003.38 TL and the last is 2,003.34 TL; total repayment is 12,020.24 TL.
• Total financing cost is 2,020.24 TL: 1,554.04 TL contractual interest, 233.10 TL KKDF and 233.10 TL BSMV.
• Month 1: 425.00 TL interest, 63.75 TL KKDF, 63.75 TL BSMV and 1,450.88 TL principal; remaining principal 8,549.12 TL.
• Month 6: 80.68 TL interest, 12.10 TL KKDF, 12.10 TL BSMV and 1,898.46 TL principal; remaining principal 0.00 TL.
• Monthly effective cost is about 5.5250% and annual effective cost about 90.6614%.

With the rate lowered to 3% (10,000 TL, 6 months) the installment is 1,901.41 TL, the last installment is 1,901.44 TL and total repayment is 11,408.49 TL.

Zero-interest and longest-term examples

At a 0% custom rate, 10,000 TL over 3 months gives installments of 3,333.33 TL, 3,333.33 TL and 3,333.34 TL; interest, KKDF and BSMV are zero, total repayment is 10,000.00 TL and the effective cost is 0%. Some banks have announced zero-interest cash advance campaigns for limited terms and conditions; whether one is open to you, and for which cards and amounts, is decided by the bank. The tool's 0% result is the arithmetic of an assumption, not an offer.

At the longest term the tool covers, 12 months, 10,000 TL at 4.25% gives an installment of 1,161.91 TL, a last installment of 1,161.86 TL and total repayment of 13,942.87 TL, of which 3,942.87 TL is cost: 3,032.97 TL interest plus 454.95 TL KKDF and 454.95 TL BSMV. A longer term lowers the monthly burden but raises the total cost sharply. A single installment (1 month) costs 10,552.50 TL: 425 TL interest and 127.50 TL tax.

Common mistakes and misunderstandings

• Adding the tax once on total interest: KKDF and BSMV are charged on each month's interest, which shrinks with the remaining principal, and a one-off addition understates the installment (by about 3 TL for 10,000 TL, 6 months, 4.25%).
• Treating the monthly contractual rate as an annual cost: the contractual rate is pre-tax interest, while the effective cost includes taxes and compounding.
• Taking the table dates as your bank's due dates: they are only an illustration at equal monthly steps.
• Treating 4.25% as current and fixed: it is a 1 October 2026 maximum-rate reference, not your bank's offer.
• Mixing up the cash advance rate with the rate for installment purchases or late-payment interest: they are separate products with separate ceilings.

Dates, day counts and bank fees

The calculation assumes the first installment is paid one month after the draw and that the later ones follow at equal monthly steps. Under Article 20 of the Consumer Credit Agreements Regulation (Tüketici Kredisi Sözleşmeleri Yönetmeliği), interest on an installment cash advance depends on the actual number of days between the draw and each due date. If a bank counts, say, 31 or 45 days in the first period, its real installment can differ from the tool's. The dates in the table are shortened to the last day of shorter months (31 January becomes 28 February) and do not mean your statement or due date.

Cash advance fees, insurance, campaign terms, limit eligibility and bank approval are not counted. If they apply, the real cost is higher; for the all-in figure, check the annual cost rate in your bank's pre-contract information form.

To compare the effective cost with another loan, Loan Annual Cost Rate Calculator is a complementary tool; if you are thinking about restructuring a card balance, see Credit Card Balance Restructuring Calculator.

Scope and limits

• The tool models installment cash advances for a personal (consumer) card over 1–12 months. 12 months is the tool's scope; it does not claim a universal legal ceiling for every bank and product. Commercial cards and longer campaign terms are outside the scope.
• The amount must be above zero with at most two decimals, the term a whole number from 1 to 12, and a custom rate from 0 to 100. With invalid input no result is shown and any earlier result is cleared.
• Changing any value or pressing Reset clears the previous result and table together; press Calculate again for a new result.
• It does not cover applications, approval, limit checks, early repayment, late interest or bank-specific fees; it is informational and is not a bank offer or legal or financial advice.