Dear Liz: My spouse signed up for a store credit card to receive a discount on a large purchase. As she has no strong interest in maintaining a line of credit there, is there a simple way of discontinuing this account without affecting our credit scores, given that we may apply for a mortgage in the near future?

If not, is it critical we maintain some frequency of use on this account?

Answer: First, let’s correct a popular misconception that marriage somehow combines your credit records. Assuming she applied for the card in her name alone, this account won’t show up on your credit report or affect your scores.

Should you apply for a mortgage together, however, her scores could affect the interest rate and terms you get. Opening and closing accounts can ding scores, so it’s best to avoid both when you’re in the market for a major loan.

Issuers vary in their policies on closing inactive accounts, so it’s hard to predict how much activity would prevent the card from being shut down. Typically, though, a small charge every two to three months is enough to keep an account open.