If one of your family members has good or excellent credit, ask to become an authorized user on one of their credit reports. As an authorized user, your relative’s account will be added to your credit reports. And as on-time payments are made, the resulting positive information will help to lessen the impact of your past mistakes. That will lead to credit-score improvement.
If you are a careful money manager who fell into debt because of unusual circumstances (medical or veterinary bill, loss of employment or some other emergency) and NOT because you spent more on your credit cards than you could afford to pay off each month, then leave the accounts open. Doing so will help your credit score, because the amount of revolving debt you have is a significant factor in your credit score. Just be sure to put the cards away. Don’t use them while you pay down your debt consolidation loan.
With poor credit, you may not be able to get approved for new credit products like credit cards. Although you may still be able to take out an auto loan or a mortgage, you’ll pay a much higher interest rate because of your low credit score. Compared to a borrower with good credit, someone with poor credit can pay $50,000 more in interest on a mortgage. Over an entire lifetime, you could end up paying over $200,000 more in unnecessary interest just because of bad credit.