Re: How to build credit history for my wife
You should be able to get good terms if you co-sign for your wife (as opposed to co-signing to someone else). There are no rules here. It depends on the leasing company.
Credit reports and scores are personal. Your wife’s credit report and score is totally separated from yours. They do not blend or impact one each other (See marriage-and-credit-scores.html for more information).
However, debt associated with joint account appears on both credit report, and is factored in both of your debt-to-income ratio. This may sometimes reduce your ability to apply for new credit.
If you want to build good credit for your wife, adding a credit card in addition to the car lease would certainly help. Naturally, you will have to co-sign on the credit card as well (if she doesn’t qualify – get her a secured credit card). It’s better than adding her as an authorized user to your credit card. Remember that it take at least two years to build a good credit score.
Good luck