Skip to content
The Wealth Blog

Credit Cards

How to Judge a Credit Card: The Review Framework

How to judge any credit card: the fee stack with GST, rewards maths and effective return, the fine print that flips verdicts, lounge reality and forex markup.

Published 2026-11-03 · Last reviewed 2026-11-03 · Part of Credit cards: picks, stacks and first cards

By Om Patel — investor, blogger and entrepreneur

Quick answer

How to judge any credit card: the fee stack with GST, rewards maths and effective return, the fine print that flips verdicts, lounge reality and forex markup.

Hand-drawn cover illustration in the site's house style — The Wealth Blog

Every card review you will read on this site — and every one you should trust elsewhere — is really running the same five checks: what the card costs, what it returns, what the fine print takes back, what the perks are actually worth, and what it charges abroad. Reviews that skip straight to the benefits list are advertising; the framework is what turns a benefits list into a verdict.

This post is that framework, in the order the damage happens. Learn it once and you can judge any card that launches next month without waiting for anyone's review — including ours.

The fee stack: what the card actually costs

Start with money leaving you, not money coming back. Two fees headline most cards: a joining fee (sometimes waived in year one) and an annual fee. Both attract 18% GST — a ₹1,000 annual fee actually bills ₹1,180. Source: IndusInd Bank, GST on credit cards (18% rate, worked ₹1,000 + ₹180 example), indusind.bank.in, accessed 3 November 2026.

The fee that matters more than either is the spend waiver: spend ₹X in a year and next year's fee is reversed. This is where marketing and arithmetic diverge, because the waiver number is chosen to nudge your spending, not to fit your life. Run it honestly:

  • Take your real annual card spend — the last 12 months' statement total, not the number you aspire to.
  • Divide the waiver threshold by 12. A ₹2 lakh waiver is ₹16,700 a month; if your organic spend is ₹11,000, every forced month-end swipe is a cost disguised as a strategy.
  • Compare the fee to what the card returns. A ₹500 net annual fee is cheap against ₹4,000 of realistic reward value and expensive against ₹800 of it — the rewards section below shows how to compute that number.

One more cost hiding in plain sight: interest on revolving balances runs roughly 3-4% a month — 40%+ annualised — on most Indian cards (issuer rate sheets show, for example, 3.75% per month / 45% APR at Federal Bank, with SBI Card up to 3.75% and RBL Bank up to 3.99% — Source: Federal Bank revised credit card charges page and Paisabazaar's interest-rate compilation, accessed 3 November 2026). Any reward calculation is void the month you start paying it; a card that earns 2% and charges 42% on a carried balance is a debt product wearing a loyalty programme. If you revolve even occasionally, the only card metric that matters is the interest rate.

Lifetime-free is a fee structure, not a quality certificate. An LTF card with 0.3% effective returns loses to a ₹2,500-fee card that returns 5% on your actual spending — and wins against it if you cannot hit the waiver. Compute both ways; the answer changes per person.

Rewards maths: the effective return percent

Every rewards card answer reduces to one number: effective return = (points earned × value per point) ÷ spend, expressed as a percentage. Most Indian cards land between under 0.5% and about 3% on everyday spend once the fine print is applied — the flashy categories do better, the exclusions drag the average down. The method (all figures below are illustrative arithmetic, not any specific card's rates):

  1. Find the earn rate. Say the card gives 4 points per ₹100 generally, and 10 points per ₹100 on groceries.
  2. Find the value per point. Points have no intrinsic value — only redemption gives them one. Take the redemption you will actually use (statement credit, a voucher you buy anyway, a flight you would have booked) and divide: if 2,000 points reliably offset ₹500, each point is worth ₹0.25.
  3. Compute the effective return. Base spend: 4 points × ₹0.25 = ₹1 per ₹100 = 1%. Accelerated category: 10 × ₹0.25 = ₹2.50 per ₹100 = 2.5%.
  4. Apply the caps. If the accelerated 10x rate caps at 1,000 bonus points a month, the 2.5% applies to your first ₹10,000 of groceries only; beyond that you are back at 1%.

The spread between redemption options is the trap worth underlining: the same 10,000 points can be worth ₹250 as a catalogue trinket, ₹500 as a voucher, ₹800 against a flight you had to book anyway. Points value is a range you choose, not a number on the box — the reviews on this site always quote a value range, because that is what the maths produces.

Two habits keep the maths honest. First, value points at the redemption you reliably make, not the aspirational one — 80% of expired points die because their owner was saving for a dream redemption that never came. Second, convert categories to rupees monthly, not annually; the accelerated category cap only becomes visible at monthly grain.

The fine print that changes everything

The fee stack and the earn table are on page one of the brochure. Verdicts flip in the back pages:

  • Milestone caps. Bonus structures often reset monthly or quarterly, and reward programmes cap total points per cycle. A card advertised at 5% that caps accelerated points at ₹20,000 of spend is a 5%-on-₹20,000 card — on ₹60,000 of monthly spend it averages out far lower.
  • Exclusion categories. Insurance premiums, utilities, rent payments, government transactions, wallet loads and education fees are commonly excluded from rewards or capped hard — often the biggest lines in a real budget. A card that excludes utilities can be a 1% card for someone whose biggest spend is electricity and broadband.
  • Reward expiry. Points routinely lapse in 2-3 years (sooner on some programmes, or when the card is downgraded). A stash you cannot spend is a rebate the issuer kept.
  • Fuel-wallet conversions. Several popular programmes push fuel savings through brand wallets or converted vouchers — the effective value is typically below the headline cashback figure, and only at the partner's outlets. Treat any fuel benefit quoted in points as worth less than its sticker until you have redeemed it.
  • The waiver-devaluation clause. Card terms can change with notice; benefits you underwrote a fee for can be trimmed later. This is not rare — see the lounge section below.

None of these clauses is hidden, exactly. They are just printed where the comparison sites never paste them. A review that quotes the earn table but not the exclusion list has done you half a job.

Lounge access: the 2024-26 reality

Airport lounge access used to be the easiest perk to value: swipe at the gate, eat ₹1,500 worth of sandwiches. Through 2024-2026, issuers methodically converted free-for-all lounge visits into spend-gated ones — you qualify for the coming quarter's visits only if you spent enough in the past period. The direction is visible on the issuer pages themselves: HDFC Bank's Millennia card grants a ₹1,000 voucher or one domestic lounge visit on ₹1,00,000 or more of spends in a calendar quarter, and Regalia Gold ties its 12 annual lounge visits to ₹1.5 lakh quarterly spends (Source: HDFC Bank Millennia and Regalia Gold product pages, hdfc.bank.in, accessed 3 November 2026). IDFC FIRST Bank gates lounge visits on ₹20,000 of spend in the previous calendar month across its lounge-access cards (Source: IDFC FIRST Bank lounge-access card pages, idfcfirst.bank.in, accessed 3 November 2026).

The economics of that shift: lounge access moved from a perk to a retention lever. If your natural monthly spend already clears the gate, the visits are genuinely free and worth valuing at what you would otherwise pay for food and wifi at airports — maybe a few hundred rupees per use. If you must manufacture spends to qualify, price the effort honestly. And note the trend line: gates have risen and visit counts trimmed across issuers over this period, so value today's terms, and expect tomorrow's to be no kinder. Train-lounge access, golf lessons and valet parking deserve the same shrug — value what you verifiably use.

Forex markup: the quiet 3.5%

Every international transaction — online purchase in dollars included — passes through a currency conversion where most Indian cards add a forex markup of up to 3.5% of the transaction value, plus GST on that fee. Source: IDFC FIRST Bank, forex markup explainer (up to 3.5% fee), idfcfirst.bank.in, accessed 3 November 2026; the 3.5% standard at most large issuers cross-checked against Razorpay's fee compilation (October 2025). On ₹1 lakh of annual international spend, that is ₹3,500-plus you may not know you are paying — enough to flip the comparison between two rewards cards the moment a Netflix-in-dollars or a foreign trip enters your life.

The fix is category-specific: a handful of cards carry zero or low forex markup as their headline feature. If your international spend is meaningful — or even ₹15,000-20,000 a year of subscriptions — the zero-forex card can beat every rewards card in your wallet for those transactions, and carrying one as a dedicated travel card alongside a domestic spender is a completely rational stack.

A worked compare-two-cards worksheet

Put the framework together on any two candidates. Six lines, ten minutes, no spreadsheet required (illustrative figures throughout):

  1. Net annual fee. Fee + 18% GST − what the waiver would realistically cost you in forced spends. Card A: ₹500 fee, ₹1,000 organic-spend gap to waiver → ₹590 effective. Card B: lifetime free → ₹0.
  2. Base effective return. Earn rate × realistic point value on your actual redemption mix. Card A: 1.5%. Card B: 0.8%.
  3. Your category-weighted return. Split last month's spend into base versus accelerated categories, apply each rate and its cap. Card A averages 1.9% on your mix; Card B averages 1.1%.
  4. Annual reward value. Card A: 1.9% × ₹3,60,000 spend = ~₹6,840. Card B: 1.1% × ₹3,60,000 = ~₹3,960.
  5. Subtract fee, add perks you verifiably use. Card A: ₹6,840 − ₹590 = ~₹6,250, plus two lounge visits you genuinely cleared the gate for (~₹800) = ~₹7,050. Card B: ₹3,960 − ₹0 = ₹3,960.
  6. Check the disqualifiers. Do you ever revolve a balance? Do excluded categories dominate your spends? Did the issuer devalue a benefit you counted? If any answer is yes, redo the arithmetic with the worse number before deciding.

In this worksheet Card A wins by roughly ₹3,000 a year — but shift one variable (spend down to ₹1,50,000, or a revolved balance for two months) and the verdict flips. That is the entire point of the framework: card quality is not in the card, it is in the match with your statement.

Where to go next in this cluster

See the framework applied with real cards and real caps in our Jupiter Edge+ CSB RuPay credit card review — a masterclass in why the cap table decides the verdict. If foreign spends are your exposure, IDFC FIRST zero forex markup cards explained works the 3.5% arithmetic in full. And if the fee-avoidance route tempts you, IndusInd Pinnacle lifetime free and the split limit shows what the LTF upgrade path actually does to your credit limit. For the wider landscape of card types and stacks, the site's complete credit card guide sits at the top of the cluster.

This is educational content, not financial advice. Reward rates, fees and benefit terms change with issuer notices; verify current terms on the issuer's page before applying, and always — always — pay the full statement balance.

Key takeaways

  • Judge a card in five checks: fee stack, effective return, fine print, perk reality, forex cost — in the order the damage happens.
  • Joining and annual fees attract 18% GST (a ₹1,000 fee bills ₹1,180), and spend-based waivers only make sense if the threshold sits near your organic spend.
  • Effective return = points earned × realistic point value ÷ spend; most Indian cards land between under 0.5% and about 3% once caps and exclusions apply (illustrative range, not a claim).
  • Verdict-flipping fine print: milestone caps, excluded categories (utilities, rent, insurance, wallet loads), reward expiry, and fuel-wallet conversions that under-deliver their headline.
  • Lounge access is now spend-gated across issuers — HDFC Millennia needs ₹1 lakh quarterly spends, IDFC FIRST cards need ₹20,000 in the previous month — so value it only if your natural spend clears the gate.
  • Forex markup of up to 3.5% plus GST applies to most cards on international transactions; a dedicated zero-forex card beats rewards cards for anyone with regular dollar spends.
  • Run the six-line compare-two-cards worksheet on your actual statement mix — the winner changes with your spend, not with the card.

Frequently asked questions

How do I calculate the real value of a credit card's reward points?

Pick the redemption you will actually make, divide its rupee value by the points it costs, then multiply by your earn rate and divide by spend. Example: 2,000 points offsetting ₹500 means ₹0.25 per point; a 4-points-per-₹100 card then returns 1%. Quote a range across your realistic redemptions, not a single number.

Is a lifetime-free credit card always the better choice?

Not automatically. LTF wins when the fee-charging card's extra rewards do not beat its net fee on your spend. A ₹2,500-fee card returning 4% effective on ₹4 lakh of spends nets ₹13,500-plus — far ahead of an LTF card at 0.8% (₹3,200). Run both numbers on your statement; either can win.

Why did my lounge access stop working even though the card is unchanged?

Issuers converted complimentary lounge visits into spend-gated ones through 2024-2026 — visits unlock only after spending a threshold in the prior month or quarter (for example ₹20,000 in the previous month on IDFC FIRST cards, ₹1 lakh in a quarter on HDFC Millennia). Check the current terms on the issuer's page; the gates have generally tightened over time.

What is forex markup on a credit card and how do I avoid it?

It is a conversion fee — up to 3.5% at most Indian issuers plus GST on it — added to every international-currency transaction, including online subscriptions billed abroad. Avoid it by carrying a zero-forex-markup card for those spends, or by paying in the local currency and declining dynamic currency conversion at the terminal.

Which spend categories usually earn no rewards?

Commonly excluded or capped: insurance premiums, rent payments via platforms, utilities, government payments, education fees, wallet loads and fuel on many cards. These are often a household's biggest lines, which is why the exclusion list — not the earn table — decides a card's true effective return for you.

Related guides