Question: what if you don't know your exact refund amount?
Answer: To find the exact amount of your refund, please refer to your tax return, If you filed a Form 1040, the Refund Amount is shown on Line 20a. If you filed a Form 1040NR, the Refund Amount is shown on Line 73a. ... If you filed a Form 1040SS, the Refund Amount is shown on Line 13a.