Comparing and looking at offers on Credit Karma does not affect your credit scores, but actually applying for a financial product (such as a loan or credit card) can affect your scores.
If you see an offer you like and decide to apply, you can click through to the lender’s site to fill out an application. When you apply and the lender reviews your application, they’ll check your credit when making the lending decision. This typically causes a hard inquiry, which may drop your credit scores by a few points whether you are approved or declined.
The good news is that even though hard inquiries usually stay on your credit reports for about two years, their effects tend to wear off after some time.
Please keep in mind that we can't know for sure if lenders will approve or decline applications. However, we do the best we can to help you narrow down your choices.