Since January 2015, payday lenders in the UK are capped at a maximum charge of 0.8% daily interest and an APR of around 1,270%. The FCA implemented this cap to protect consumers from high-cost lending, ensuring no borrower pays more than double what they borrowed, while some lenders offer lower rates to remain competitive. To reduce loan costs, borrowers can compare daily interest rates, consider early repayment options, or leverage good credit ratings for potential discounts.