QuickBooks Online provides thousands of solutions, and you can easily download bank transactions for the last 90 days. QuickBooks Online supports file size up to 350KB (kilobytes). To import more than 90-days of bank transactions in QuickBooks online, go through these steps. Go to 'Transactions > Banking', at the banking page, click 'Update' drop-down arrow and select 'Upload". Click Browse to select the file from their computer and click 'Next', In the drop-down menu, select bank account to upload the transaction and click next if you don't have an account click 'Add New' and add an account. You'll be asked to select columns from the CSV file and click Next, and click 'Finish'. In case while going through the process, you face any doubt, feel free to contact us at our toll-free number (844)-932-1139.