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CardMath.in2026 MITCSmart Reward Math
Verified 2026 Bank MITC Rules & RBI ExclusionsUpdated: 2026-03-01

HDFC Diners Club Black Metal Edition vs OneCard Metal Credit Card for ₹30,000 Monthly Spend

Comparing HDFC Diners Club Black Metal Edition vs OneCard Metal Credit Card at ₹30,000/month. HDFC Diners Club Black Metal Edition wins, delivering ₹9,855 net annual value (2.74% ROI) vs ₹2,210 for OneCard Metal Credit Card.

Interactive Head-to-Head Simulator

Test Your Monthly Spend & Category Mix

Simulates real-world capping thresholds, 18% GST deductions, and bank waiver rules in real time.

₹30,000(₹3,60,000/yr)
₹10,000/mo₹1,00,000/mo₹2,50,000/mo
Winner at ₹30,000/mo+ ₹7,645/yr Higher Value

HDFC Diners Club Black Metal Edition

Delivers ₹9,855 net annual returns (2.74% ROI) vs ₹2,210 on OneCard Metal Credit Card.

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Card A

HDFC Diners Club Black Metal Edition

HDFC Bank

₹9,855Net Annual Benefit
Gross Rewards:₹21,655/yr
Effective Fee (incl. GST):₹11,800
Net ROI on Spend:2.74%
Fee Waiver Progress (8L target):45%
Card B

OneCard Metal Credit Card

Federal Bank

₹2,210Net Annual Benefit
Gross Rewards:₹2,210/yr
Effective Fee (incl. GST):Waived (₹0)
Net ROI on Spend:0.61%
2-Card Optimization HackMaximize Trapped / Capped Spend
+₹3,600/year Extra Yield

Pair HDFC Diners Club Black Metal Edition + Airtel Axis Bank Credit Card

Pair HDFC Diners Club Black Metal Edition with Airtel Axis Bank Credit Card to capture up to ₹3,600/yr extra on zero-reward categories.

Routes excluded categories:Utility & Offline Spends
Add Airtel →

Detailed 12-Category Rupee Breakdown (@ ₹30,000/mo)

Spend CategoryMonthly SpendHDFC Diners Club Black Metal EditionOneCard Metal Credit Card
Amazon, Flipkart & Myntra Shopping₹7,500/mo₹749 (9.99%)₹75 (1%)
Scan & Pay Merchant UPI₹4,500/mo₹150 (3.33%)₹9 (0.2%)
Electricity, Water, Gas & Broadband Bills₹3,600/mo₹120 (3.33%)₹7 (0.2%)
Swiggy, Zomato & Dining Out₹3,600/mo₹240 (6.66%)₹36 (1%)
Blinkit, Zepto, Instamart & Supermarkets₹3,000/mo₹100 (3.33%)₹30 (1%)
Petrol & Diesel at Fuel Stations1% fuel surcharge waiver up to ₹1,000/mo₹2,400/mo0% Excluded0% Excluded
Flights, Hotels & IRCTC Trains₹2,400/mo₹396 (16.5%)₹24 (1%)
LIC, Health & Term Insurance Premiums₹1,500/mo₹50 (3.33%)₹3 (0.2%)
House Rent & School/College Fees1% fee on rental transactions; zero reward points₹1,500/mo0% Excluded0% Excluded
International Travel & Forex Spends₹0/mo₹0 (3.33%)₹0 (1%)
Gold, Silver & Jewelry Purchases₹0/mo₹0 (0%)₹0 (0%)
Income Tax, GST & Challan Payments₹0/mo₹0 (0%)₹0 (0%)
Net Annual Benefit₹3,60,000/yr+₹9,855+₹2,210

Frequently Asked Questions

Which card is better between HDFC Diners Club Black Metal Edition and OneCard Metal Credit Card for ₹30,000/month?▼
At ₹30,000/month (₹360,000/year), HDFC Diners Club Black Metal Edition mathematically outperforms OneCard Metal Credit Card by ₹7,645/year. HDFC Diners Club Black Metal Edition delivers ₹9,855 net annual benefit (2.74% effective yield), while OneCard Metal Credit Card returns ₹2,210 (0.61% effective yield).
Will the annual fee be waived at ₹30,000 monthly spend?▼
On an annual spend of ₹360,000: HDFC Diners Club Black Metal Edition annual fee is payable at ₹11,800 (incl. 18% GST). OneCard Metal Credit Card annual fee is waived (₹0).
How do reward caps impact the earnings on both cards?▼
At this spend tier, HDFC Diners Club Black Metal Edition loses ₹0/year to monthly cashback caps, while OneCard Metal Credit Card loses ₹0/year. HDFC Diners Club Black Metal Edition remains uncapped at this spend. OneCard Metal Credit Card remains uncapped at this spend.
What is the breakeven monthly spend between HDFC Diners Club Black Metal Edition and OneCard Metal Credit Card?▼
The calculated crossover breakeven spend is ₹19,000/month, where higher-fee benefits overtake the lower-fee option.
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