I've just posted a similar question under a UK sub-topic.  QB already includes a Mileage Allowance expense account, with sub-accounts for the VAT-inclusive and VAT-exclusive components.  I'm self-employed. sole trader, and am starting to use the Flat Rate method (mileage allowance) to claim for vehicle expenses (mine, not an employee's).  I was going to use 'Write Cheques' to enter the mileage allowance claim, but this woul require entering the expense in the Petty Cash bank account rather than Current, because using the Current account would create a problem when it comes to reconciling the account (as the expense won't appear on the bank statement).  I expect there's a better way and wondered if you could point me in the right direction.