What is a Top Up loan? A Top Up loan is a new loan which combines any existing balance (what’s left to pay on your old loan) with an additional amount of money that you would like to borrow. Related articles How does a Top Up loan work? How long will it be until I get my Top Up loan money? Can I increase my existing loan? Will applying for a Top Up loan affect my credit file? Are there any fees if I want to top up my loan?