Trump is claiming that he will support a rule change for credit cards that will cap interest rates at 10%. This is a horrendous idea that will cause real problems. The reason interest rates are where they are is a topic I have visited here before. People with bad credit are very likely to default.
With a ten percent interest rate, if more than 3% or 4% of people default, the bank will lose money covering the defaults.
Studies have shown that the lower your FICO score, the higher are your chances of default.
| Credit Score | % of the population | probability of default |
| 800 or more | 13% | 1% |
| 750-799 | 27% | 1% |
| 700-749 | 18% | 4.4% |
| 650-699 | 15% | 8.9% |
| 600-649 | 12% | 15.8% |
| 550-599 | 8% | 22.5% |
| 500-549 | 5% | 28.4% |
| less than 500 | 2% | 41% |
Credit Scores and Default Rates
With a ten percent default rate, anyone who has a credit score less than 700 is a money loser and won’t be able to get anything other than a secured credit card, and those with a credit score between 700-749 are right there on the border and will likely see cards with very low limits.
That isn’t to say credit scores are without fault. I detest how the FICO score works, but it is what the banks use, and for that reason, Trump’s actions will make sure Americans stop living beyond their means.
Maybe that’s his intent. If it isn’t, well, price controls never work as intended.

