Interest Rates Could Rise Again in October Buyers ask me whether they should move now or wait. I understand why. When you’re making a decision this big, even a small change in the monthly payment matters. But I think there’s a better question to ask before choosing a price range: What payment would still feel comfortable if rates changed before you found your home? I always suggest testing rates half a percentage point above today’s rate if you plan to buy in three months, 0.