问个报税的问题

2020年美国两次通过纾困法案给大家发钱，2018和2019年我的收入过线没有收到任何纾困支票。不过2020年因为疫情收入受到影响，按照2020年的收入是可以拿到纾困补助的，Turbotax网站上这么说的：


https://turbotax.intuit.com/tax- ... lus-check/L1pSdyZ5I


Are stimulus checks considered taxable income?

The stimulus check will be paid this year based on information from your most recent tax return and will be reconciled in tax year 2020 to ensure you received the correct rebate amount.

If you're underpaid based on your 2020 income, you may receive more tax credit when you file your 2020 taxes.
If you're overpaid, you don’t have to pay it back.
For example, if you received $700 as an individual based on your 2019 return, but when you file your 2020 tax return, it shows your income took a hit and you should have received a $1,000 stimulus check, you would receive an additional $300 credit on your 2020 return.


问题来了，用Turbotax报税怎么才能reconcile这个不同来拿到正确金额的补助呢？