HDFC Diners Club Black Metal vs IDFC FIRST Gaj (2026)
The answer changes hands 2 times between ₹0.25L and ₹5L a month — this pair is decided by your spend, not by the board.
Head to head
| HDFC Diners Club Black Metal | Metric | IDFC FIRST Gaj |
|---|---|---|
| #5 — wins this row | Our rank | #15 |
| ₹10,000/yr — wins this row | Fee — joining · annual (+ GST) | ₹12,500/yr |
| ₹8,00,000 spend | Fee waiver | ₹10,00,000 spend |
| 2% + GST | Forex markup | Nil — 0% markup on foreign currency, DCC and static-currency-conversion transactions — wins this row |
| 1.99%/mo (23.88%/yr) | APR | Dynamic 0.71%–3.85%/mo (8.5%–46.2%/yr); overdue rate 3.99%/mo (47.88%/yr) on MAD non-payment |
| 3.3% | Headline earn rate | 3.3% |
| HDFC Reward Points | Currency | IDFC FIRST Reward Points |
| ₹1.00/pt | House value | ₹0.50/pt † |
| Club Marriott, Amazon Prime & Swiggy One on ₹1.5L spend in 90 days | Welcome benefit | 12,500 RP on joining-fee payment (₹12,500 at the ₹1 travel value) + a 25%-off 5-star hotel voucher worth up to ₹5,000 on ₹1L spent in 60 days — once per customer |
| 91 of 789 | Lounge doors opened | 155 of 789 — wins this row |
| ₹2.5L+/month net | Income — salaried | not published |
| ITR ₹30L+/yr | Income — self-employed | not published |
† IDFC FIRST Gaj: Gaj redeems the IDFC point at ₹1.00 on flight and hotel bookings in the app's Travel & Shop section — DOUBLE the ₹0.50 house value and 2.5× Ashva's ₹0.40 — and ₹0.25 on vouchers, products or "pay with points". earn.base is scaled UP to that ₹1.00 reality; points can only cover 70% of a booking, and 1.5L a month / 3L a year of them.
Gold marks the better side of a row. House value is our ₹-per-point mark for each card's currency — the full valuation index →
Ranking-value face-off
Everyday spend at each card's base rate plus a realistic ~20% at its best accelerator (less for narrow or capped boosters) — milestones, fee waivers and the redemption haircut all at our house ₹/point. That's why the biggest headline rate doesn't automatically win. This is the ranking model, the one that orders the board; each card page prints the earn-rate-only net annual value instead, which reads lower for any card with an accelerator (both models, side by side). Tune it to your own spend in the calculator.
It swings with spend: IDFC FIRST Gaj at ₹1L/month, HDFC Diners Club Black Metal at ₹3L/month, IDFC FIRST Gaj at ₹5L/month.
Where the lead changes hands
The lead changes hands at ₹1.5L and ₹3.25L a month: IDFC FIRST Gaj is ahead by ₹13,256 at ₹0.25L, IDFC FIRST Gaj by ₹25,112 at ₹5L.
IDFC FIRST Gaj pays a renewal bonus whatever you spend, and HDFC Diners Club Black Metal pays nothing to stay.
HDFC Diners Club Black Metal draws above the line, IDFC FIRST Gaj below · ₹0.25L to ₹5L a month, step by step
| Monthly spend | HDFC Diners Club Black Metal | IDFC FIRST Gaj | In front |
|---|---|---|---|
| ₹0.25L | ₹3,941 | ₹17,197 | IDFC FIRST Gaj by ₹13,256 |
| ₹0.5L | ₹17,882 | ₹34,393 | IDFC FIRST Gaj by ₹16,511 |
| ₹0.75L | ₹41,823 | ₹51,590 | IDFC FIRST Gaj by ₹9,767 |
| ₹1L | ₹55,764 | ₹68,786 | IDFC FIRST Gaj by ₹13,022 |
| ₹1.25L | ₹69,705 | ₹85,983 | IDFC FIRST Gaj by ₹16,278 |
| ₹1.5L | ₹1,23,646 | ₹1,03,180 | HDFC Diners Club Black Metal by ₹20,466 |
| ₹1.75L | ₹1,37,587 | ₹1,20,376 | HDFC Diners Club Black Metal by ₹17,211 |
| ₹2L | ₹1,51,528 | ₹1,37,573 | HDFC Diners Club Black Metal by ₹13,955 |
| ₹2.25L | ₹1,65,469 | ₹1,54,769 | HDFC Diners Club Black Metal by ₹10,700 |
| ₹2.5L | ₹1,79,410 | ₹1,71,966 | HDFC Diners Club Black Metal by ₹7,444 |
| ₹2.75L | ₹1,93,351 | ₹1,89,163 | HDFC Diners Club Black Metal by ₹4,188 |
| ₹3L | ₹2,07,292 | ₹2,06,359 | HDFC Diners Club Black Metal by ₹933 |
| ₹3.25L | ₹2,21,233 | ₹2,23,556 | IDFC FIRST Gaj by ₹2,323 |
| ₹3.5L | ₹2,35,174 | ₹2,40,752 | IDFC FIRST Gaj by ₹5,578 |
| ₹3.75L | ₹2,49,115 | ₹2,57,949 | IDFC FIRST Gaj by ₹8,834 |
| ₹4L | ₹2,63,056 | ₹2,75,146 | IDFC FIRST Gaj by ₹12,090 |
| ₹4.25L | ₹2,76,997 | ₹2,92,342 | IDFC FIRST Gaj by ₹15,345 |
| ₹4.5L | ₹2,90,938 | ₹3,09,539 | IDFC FIRST Gaj by ₹18,601 |
| ₹4.75L | ₹3,04,879 | ₹3,26,735 | IDFC FIRST Gaj by ₹21,856 |
| ₹5L | ₹3,18,820 | ₹3,43,932 | IDFC FIRST Gaj by ₹25,112 |
Transfer reach
Only HDFC Diners Club Black Metal
- Singapore Airlines KrisFlyer
- Finnair Plus (Avios)
- Qatar Airways Privilege Club (Avios)
Full route maps on each card page, best ₹/point routes on the optimizer →
What to watch out for
HDFC Diners Club Black Metal
- Diners acceptance still patchy internationally
- Lower SmartBuy cap than Infinia (10,000 RP/mo vs 15,000) — shares the 3,000 RP/mo voucher sub-cap and 2026 trims
- Carry a Visa/Mastercard backup for travel
IDFC FIRST Gaj · 4 more →
- Invite-only for private-banking clients — there is no public route that gets you approved
- Closed loop: zero airline or hotel transfer partners, like every other IDFC card
- The ₹1 is portal-locked and pays at most 70% of a booking; cash out and it's ₹0.25
The call
For the ₹1L/month spender, IDFC FIRST Gaj nets ₹68,786 against ₹55,764 — a ₹13,022 gap. At ₹5L/month, IDFC FIRST Gaj nets ₹3,43,932 against ₹3,18,820 — a ₹25,112 gap. Lounge chasers: IDFC FIRST Gaj opens 155 of 789 tracked doors to HDFC Diners Club Black Metal's 91.
Our standing verdicts: HDFC Diners Club Black Metal — Keep; IDFC FIRST Gaj — Keep. On our board, HDFC Diners Club Black Metal sits at #5 to IDFC FIRST Gaj's #15 — that's the overall call. Your spend pattern can overrule us: run your exact numbers →
Straight answers
Which is better, HDFC Diners Club Black Metal or IDFC FIRST Gaj?
HDFC Diners Club Black Metal. It sits at #5 on our board to IDFC FIRST Gaj's #15. IDFC FIRST Gaj takes 4 of the 7 rounds we can score. It swings with spend: IDFC FIRST Gaj at ₹1L/month, HDFC Diners Club Black Metal at ₹3L/month, IDFC FIRST Gaj at ₹5L/month.
HDFC Diners Club Black Metal or IDFC FIRST Gaj — which earns more at ₹3L a month?
At ₹3L a month, HDFC Diners Club Black Metal nets ₹2,07,292 against ₹2,06,359 — a ₹933 gap. Those are ranking-value figures: everyday spend at the card's base rate plus a realistic slice at its best accelerator, net of the fee.
Which costs less to hold, HDFC Diners Club Black Metal or IDFC FIRST Gaj?
HDFC Diners Club Black Metal — ₹10,000/yr against ₹12,500/yr. HDFC Diners Club Black Metal waives its fee at ₹8,00,000 of spend; IDFC FIRST Gaj at ₹10,00,000 of spend.
Which gets you into more airport lounges, HDFC Diners Club Black Metal or IDFC FIRST Gaj?
Lounge chasers: IDFC FIRST Gaj opens 155 of 789 tracked doors to HDFC Diners Club Black Metal's 91. Visit quotas, guest charges and spend gates are per card — the lounge map carries each one.
How current is this comparison?
Card records last re-verified against their issuers' own documents: HDFC Diners Club Black Metal on 2026-08-05, IDFC FIRST Gaj on 2026-07-26. Every figure on this page — the ranking values, the fee rows, the lounge counts, the transfer ratios — is recomputed from those records each time the site builds, so a devaluation changes the call the day we log it.