When I first started selling tradelines through my own site, I wasn’t running separate business and personal finances — it was all one big soup. The business expenses went on whatever card had room. It worked until it didn’t. The moment business spending started hitting my credit utilization in a meaningful way, I noticed my scores softening. Not dramatically, but enough that I paid attention. That experience is basically the whole case study for why using a personal credit card for business is a short-term convenience with real long-term tradeoffs.





