Marcus Chen

Marcus writes about credit cards the way a trader reads a spread — numbers first, narrative second. After two decades in markets, corporate finance, and running his own businesses, he found that the same analytical habits that work in trading also work for evaluating a rewards program: demand hard data on the inputs, pressure-test the assumptions, and never trust a recommendation you can’t show the math behind.

That practical lens shapes his writing for PayrollByCreditCards.com. Every article he publishes starts with the same question — “If I ran this with my own money, would it actually come out positive after fees?” — and he is especially focused on the ways business owners misread the fine print on credit card rewards: the subtle differences between category bonuses, portal multipliers, and merchant-negotiated rates that can quietly turn a clever strategy into a slow loss.

When Marcus isn’t writing, he’s testing cards and services himself, documenting the results, and double-checking the math before anything gets published.

Marcus’s work on PayrollByCreditCards.com is fact-checked by the editorial team and reviewed for accuracy against current issuer terms as of the publication date shown on each article.