Welcome to CreditLogic.in
If you have ever stared at a credit card comparison table and felt completely lost — you are not alone.
Thousands of Indians apply for credit cards every month based on flashy bank advertisements, WhatsApp forwards, or a colleague's casual suggestion — without ever understanding the actual cashback structure, the annual fee trap, or the fine print that quietly changes everything after the first year.
CreditLogic.in was created to fix exactly that.
We are India's honest, independent, reader-first personal finance blog — dedicated to cutting through bank marketing language and giving you real, number-backed, plainly written information about credit cards, UPI payments, cashback strategies, and financial products that directly affect your everyday life.
No sponsored rankings. No blind promotions. No content written to please advertisers.
Just honest research, real calculations, and straight answers — every single time.
Meet the Person Behind CreditLogic.in
Suman Bayen
Founder & Author, CreditLogic.in | Kolkata, West Bengal, India | creditlogic456@gmail.com
Hello! I am Suman Bayen — a Mechanical Engineer from Kolkata, West Bengal, and the founder and sole author of CreditLogic.in.
By profession, I am an engineer. By passion, I am obsessed with personal finance — specifically, how credit cards and digital payments work in India, and how most people are quietly leaving thousands of rupees on the table every single month without realising it.
My Story — How CreditLogic.in Was Born
Like most Indians, I got my first credit card without fully understanding how it worked.
I knew it gave me cashback. I knew I had to pay the bill. But beyond that? The reward points system confused me. The cashback categories were never clearly explained. I once spent an entire month thinking I was earning 5% on my online purchases — only to discover the cap meant I had actually earned far less. I switched payment methods and lost cashback I should have earned. I missed a billing cycle and paid interest that wiped out three months of rewards.
Every mistake was a lesson. And as a Mechanical Engineer — someone trained to analyse systems, understand how components interact, and optimise processes — I naturally started applying that same thinking to credit cards.
I built spreadsheets. I tested cashback rates. I read RBI circulars. I compared the same transaction across multiple cards and multiple UPI apps to see exactly what came back. I tracked SBI's cashback changes statement by statement. I took the Kiwi RuPay card to my local kirana store to verify with my own eyes that it actually worked on a simple UPI QR code.
After two years of this kind of research — and after realising that the honest, number-backed information I was looking for simply did not exist in one place in plain language — I started CreditLogic.in.
The mission was simple: Write what I wish I had been able to read when I was starting out. Make it honest. Make it specific. Make it useful for real Indians with real spending patterns — not just the top 5% with ₹50,000/month card spend.
Why an Engineer Writes About Credit Cards
People sometimes ask me — why is a Mechanical Engineer writing about personal finance?
My answer: because the skills are the same.
Engineering teaches you to break complex systems into components, understand how each part behaves, test your assumptions against real data, and arrive at a conclusion you can defend with evidence. That is exactly what good personal finance analysis requires.
When I review a credit card, I do not just read the bank's brochure. I calculate the actual effective return rate. I identify the edge cases and exclusions. I test the UPI integration. I compare the fee against the realistic annual benefit. I run three spending scenarios and show you the numbers for each.
That is the engineer in me — applied to your wallet.
My Relationship with Credit Cards and Finance
I have personally used and tested the following cards that are reviewed on CreditLogic.in:
- Kiwi RuPay Credit Card — tested at local kirana stores, vegetable markets, and auto-rickshaw QR codes in Kolkata
- HDFC Millennia Credit Card — tested for online cashback on Amazon, Flipkart, and Swiggy
- Axis Ace Credit Card — tested for Google Pay utility bill cashback
- SBI Cashback Card — tracked before and after the April 2026 policy changes
Every review I write is based on either personal usage, verified statement data, or exhaustive research from official bank sources, RBI publications, and NPCI guidelines.
I am not a financial advisor. I am a Mechanical Engineer who is deeply curious about how money works — and committed to sharing what I find as honestly as I can.
What CreditLogic.in Does
We research, test, and explain India's credit card and personal finance landscape in plain language — for every Indian, regardless of income level or financial background.
Credit Card Reviews
In-depth, honest reviews of India's major credit cards. Every review includes real cashback calculations, annual fee analysis, break-even maths, and a clear verdict on who the card is genuinely right for — and who it is not.
Comparison Guides
Head-to-head comparisons between competing cards with real rupee numbers. We calculate exactly how much each card earns at different monthly spend levels so you can make an informed decision.
Policy and Regulatory Updates
When banks change cashback rates or the RBI issues new guidelines, we explain exactly what changed, who is affected, and what action to take. Our coverage of the April 2026 SBI cashback policy changes — with specific before-and-after numbers — was among the most detailed available in India.
How-To Guides
Step-by-step practical guides for real people. How to link a credit card to UPI. How to maximise cashback at kirana stores. How to check your CIBIL score. How to use the interest-free credit period effectively.
UPI and Digital Payment Content
India-specific guidance on RuPay credit cards on UPI, Google Pay bill payment cashback strategies, PhonePe credit card linking, and the MCC code issues that silently kill cashback for millions of Visa cardholders using UPI.
Our Mission
To make personal finance simple, honest, and empowering for every Indian.
India has over 100 million credit card users — and the vast majority are not getting maximum value from their cards. They pay annual fees on cards that do not earn enough to justify them. They miss cashback because they do not know which payment channel to use. They tap the wrong card at the wrong merchant, every single day.
CreditLogic.in exists to change that — one honest, well-researched article at a time.
We believe:
- Every Indian deserves access to clear, honest financial information — not just those who can afford a financial advisor
- Good financial decisions come from understanding your options — not from trusting bank advertisements
- A well-chosen credit card can return ₹10,000–₹15,000 per year to a household — money that belongs in your pocket
- Personal finance education should be free, honest, and available in plain language
What We Cover
Why Trust CreditLogic.in
Truly Independent
CreditLogic.in has no ownership relationship with any bank or financial institution. Our editorial content is never reviewed, approved, or influenced by the brands we cover.
We Show Our Maths
Every cashback claim comes with the actual calculation. We do not say "this card earns great rewards" — we say "at ₹25,000/month spend, this card earns ₹7,680/year at the current rate, giving a net annual return of ₹X after the annual fee." Readers can verify every number.
We Test, Not Just Research
Many credit card blogs simply rewrite bank brochures. CreditLogic.in goes further — personally testing cards at kirana stores in Kolkata, verifying UPI cashback across merchant categories, and tracking policy changes statement by statement.
We Disclose Everything
Every affiliate link is disclosed. Every sponsored content is labelled. Every limitation and negative aspect of a card is reported alongside the positives. We do not write reviews designed to make a card look better than it is.
We Update When Things Change
When credit card terms change or RBI issues new guidelines, CreditLogic.in updates content promptly. Our readers deserve current information — not outdated reviews from two years ago.
E-E-A-T Commitment
All content on CreditLogic.in is created in accordance with Google's E-E-A-T framework — Experience, Expertise, Authoritativeness, and Trustworthiness — which is especially important for financial content in Google's YMYL category.
Our Editorial Standards
Every article on CreditLogic.in must meet these standards:
Accuracy — All facts, rates, and figures verified against official bank sources, RBI guidelines, or NPCI publications before publication.
Honesty — Negatives reported as clearly as positives. If a card's reward rate was cut, we say so. If a card no longer justifies its fee, we say so.
Clarity — Written for real people, not finance professionals. Every article is understandable by someone with no prior knowledge of the topic.
Currency — All articles include a "Last Updated" date. Content is reviewed and updated whenever significant changes occur.
Disclosure — All affiliate relationships and potential conflicts of interest are clearly disclosed.
Important Disclaimer
CreditLogic.in is an independent educational blog. Suman Bayen and CreditLogic.in are:
- Not a bank, NBFC, or financial institution
- Not a registered financial advisor or investment advisor under SEBI
- Not affiliated with RBI, NPCI, or any government authority
- Not an official representative of any credit card company
- An independent personal finance researcher committed to honest, reader-first content
All content on CreditLogic.in is for educational and informational purposes only. Nothing on this website constitutes professional financial advice. Please consult a qualified financial advisor and verify all product details with the relevant bank before making any financial decision.
Get in Touch
I personally read every message sent to CreditLogic.in. No automated replies. No call centres.
If you have a question, spotted an error, want to suggest a topic, or simply want to share your own credit card experience — please reach out. I genuinely enjoy hearing from readers.
Author: Suman Bayen Email: creditlogic456@gmail.com Website: www.creditlogic.in Location: Kolkata, West Bengal, India Response time: Within 24–48 hours, Monday to Friday
A Personal Note
I started CreditLogic.in because I was frustrated — frustrated that the financial information available to most Indians was either too complex, too sponsored, or simply wrong.
As a Mechanical Engineer from Kolkata, I did not have a finance degree or a background in banking. What I had was a curiosity, a willingness to do the research properly, and a genuine belief that every Indian deserves honest information about their money.
Two years later, CreditLogic.in covers India's most important credit cards, UPI cashback strategies, and regulatory changes — with the same engineering precision I apply to everything else in my professional life.
Every article I publish is written with one question in mind:
"Would this actually help someone make a better decision about their money?"
If the answer is yes — it gets published.
Thank you for reading CreditLogic.in. Your trust means everything.
— Suman Bayen Founder, CreditLogic.in | Mechanical Engineer | Personal Finance Researcher Kolkata, West Bengal, India
© 2026 CreditLogic.in — Smart Choices. Smarter Savings. CreditLogic.in is an independent personal finance blog based in Kolkata, India. Founded by Suman Bayen | Last Updated: June 2026