Credit card debt consolidation in India: the four routes

A revolving credit card balance in India is the most expensive borrowing most households will ever hold. SBI Card’s Most Important Terms and Conditions state finance charges of 3.75% per month on unsecured cards, which the bank annualises as 45% per year, and 18% tax applies to that interest as well as to the fees. Against that, personal loan balance transfer rates advertised as at 2026-09-03 start between 9.99% and 11%, and loan interest carries no GST at all.

That gap, roughly 45% against 12%, is the largest arbitrage in Indian retail credit. It is also the reason consolidation is marketed hard, and the reason it is worth checking the arithmetic rather than the pitch. The debt consolidation calculator above runs the comparison on real balances.

What the card actually costs

Three things stack on a revolving balance.

The monthly finance charge. Card rates are quoted per month and the RBI Master Direction on Credit Card and Debit Card Issuance and Conduct Directions, 2022 requires them to be disclosed on an annualised basis as well. SBI Card publishes 3.75% per month, 45% per year, on unsecured cards and 2.75% per month, 33% per year, on secured and defence variants. Card rates across issuers commonly sit in a 36% to 48% band.

GST at 18% on that interest. SBI Card’s terms state that tax at 18%, as 9% central plus 9% state or 18% integrated, applies to all fees, interest and charges. Axis Bank’s EMI charges page states 18% on both fees and interest charged. A card at 3.75% per month therefore costs about 4.43% per month in cash terms, or roughly 53% a year before any compounding.

The loss of the interest-free period. Once a balance revolves, new purchases start accruing interest from the transaction date rather than from the statement date. This is the part that is invisible on a statement: the cost of the old balance is quoted, the cost imposed on new spending is not.

Interest is charged on the average daily balance, not on a month-end figure, so a payment made early in the cycle costs less than the same payment made late.

The minimum-due trap

The minimum amount due is typically around 5% of the outstanding, subject to a rupee floor. Paying it keeps the account current, keeps the bureau report clean, and moves the balance very little.

The RBI Master Direction requires the minimum amount due to be set so that it does not result in negative amortisation, meaning the balance cannot grow while minimums are being paid. It also prohibits capitalising unpaid charges, levies and taxes for the purpose of charging interest. Neither rule makes the payoff quick. A balance falling by a small fraction each month while interest accrues at 3.75% plus tax can take many years to clear, and the calculator flags balances where the minimum-only path effectively never pays off.

That is the comparison worth making. Not “loan rate against card rate”, but “what the minimum-only path actually costs against what a fixed instalment costs”.

The four routes

Route one: keep paying, and pay more than the minimum. No fee, no application, no new account. Every rupee above the minimum goes straight to principal. On a small balance with a clear path to zero within a few months this usually beats every alternative, because the fees on the alternatives are fixed and the interest saved is not.

Route two: card to card, on a plain balance transfer. Some issuers offer a promotional window: Kotak’s balance transfer facility terms describe 0% for 90 days or an EMI plan, with a processing fee of ₹349 per ₹10,000 or part thereof plus GST, which works out at about 3.5% with no cap. A short promotional window suits a balance that can genuinely be cleared inside it. A balance still outstanding when the window closes reverts to the card rate.

Route three: convert the balance to an EMI plan on the card. Published plan rates run roughly 0.83% to 2% per month with processing fees from 0.75% at SBI Card to about 3.5% at Kotak, and 18% GST applies to both the fee and the interest inside each instalment. It is far cheaper than revolving and quicker to arrange than a loan. The mechanics are on balance transfer on EMI explained and the full cost stack on balance transfer charges and GST.

Route four: a personal loan that clears the cards. The largest rate drop of the four, and the only one that also removes the GST on interest, because loan interest is exempt. It costs a processing fee of 1% to 3% plus 18% GST, plus documentation of ₹2,000 to ₹5,000, and it requires a sanction. Card foreclosure is nil, so there is no exit charge on the card side.

Why the loan usually wins on a large balance

The comparison is worth doing on totals rather than on rates, because the loan has a fee and the card does not.

On ₹2,50,000 spread across two cards at 42% and 40%, against a 36-month personal loan at 13% with a 2% processing fee plus GST:

• The card path on minimum payments alone does not clear in any reasonable horizon, and the balance stays close to where it started for years.
• The loan carries a fee of ₹5,000 plus ₹900 of GST, and an instalment of about ₹8,424 a month for 36 months.
• Paying that same ₹8,424 a month at the cards instead, rather than the minimum, costs materially more in total interest, because the rate is three times higher and taxed.

The fee is recovered quickly at that rate gap. The general shape is that consolidation gains most where the balance is large, the card rate is high and the borrower can commit to a fixed instalment.

Avalanche and snowball, if the loan is not taken

Where several balances are being cleared without consolidating, the order matters.

Avalanche directs every spare rupee at the highest rate first, while paying minimums on the rest. It minimises total interest, arithmetically, always.

Snowball directs it at the smallest balance first. It costs more in interest, and it clears accounts sooner, which some people find easier to sustain.

The gap between the two is usually smaller than the gap between either of them and paying minimums across the board. Where the rates are close, as they often are across cards from different issuers, the difference is a rounding error and the choice is about behaviour rather than arithmetic.

When consolidation makes it worse

The sanctioned rate is not the advertised rate. HDFC’s personal loan band runs 9.99% to 21%, and the advertised floor is gated on credit profile. A borrower already carrying revolving card balances often has an elevated utilisation ratio, which is exactly the profile that gets priced at the top of the band. A loan sanctioned at 20% against a card at 45% plus GST still helps; one sanctioned near the card rate does not.

The tenure is stretched too far. A 60-month loan has a lower instalment than a 36-month one and a higher total interest cost. Where the goal is to clear the debt rather than to reduce the monthly outflow, the shorter tenure is the one that does it.

The cards get used again. This is the failure mode that turns a consolidation into a doubling. The loan clears the balances, the cards sit at zero with their full limits available, and six months later the household is carrying an instalment and a revolving balance. Nothing in the arithmetic prevents it.

The balance is small. A ₹40,000 card balance against a 2% processing fee plus GST and ₹2,000 of documentation is paying about ₹2,950 in fees to save interest on a balance that a few months of concentrated repayment would clear.

What to check before applying

The sanctioned rate rather than the advertised one, since the whole comparison rests on it. The processing fee, whether it is a percentage or a flat figure, and whether the quote includes GST. The tenure, and what the total interest is at that tenure rather than only what the instalment is. And whether the loan actually clears every balance, because a partial consolidation leaves the most expensive part of the debt exactly where it was.