You can claim the VAT refund provided by your business is registered under VAT and charge the 5% VAT reasonably. If you are a VAT registered business owner, you must file a VAT returns, which should provide the details of your sales and inputs/outputs VAT paid during the time of tax. To clarify you, the money you collect on the sales is the output VAT, while the funds payable to the supplier that adds to the expenses is the input VAT of your business. If your input VAT amount is higher then your output VAT amount, then the extra amount is VAT refundable.