To compare credit cards that offer cashback, start by looking at the cashback rates for different spending categories, as these can vary significantly. Also consider any fees associated with the card, such as annual fees or foreign transaction charges. Use comparison websites to easily see how rewards stack up and read the terms carefully, as some cards may have caps on cashback or promotional periods. Finally, ensure you check the eligibility criteria and consider contacting a financial adviser for personalised advice based on your situation.