Blog

I used a debit card for four years. Then I ran the math. This is what I found.

Everyone says to avoid annual fee cards. Here is the exact math on why that advice costs you money.

The right card for Black Friday weekend is not the same as your everyday card. Here is the strategy.

Gift cards are one of the worst ways to give money. Here is what actually makes financial sense.

The framework I use every January to evaluate whether my card lineup is still correct.

After four years of refusing, Marcus applied for a rewards card. I documented the entire thing.

The exact math on using dining rewards to offset Valentine's Day restaurant spending.

Adding someone as an authorized user is one of the fastest ways to build credit. Here is exactly how it works.

My grandmother has never optimized anything in her financial life. Yet her credit score is extraordinary. This is the explanation.

I'm often asked which cards I personally carry. This is the exact setup and the math behind each choice.

Which is actually better? The honest comparison with real numbers.

Marcus has been right about something the whole time. I did the math and I have to acknowledge it.

The annual card review doesn't have to happen in January. Here is how to run it mid-year.