There are a few things you may need to consider when filing your Annual ITR.
First, you need to make sure you are using the correct table/reference. TRAIN gave us newer (lower) rates starting with income from 2023. You may have been using these updated rates when you should not yet do so. For your 2022 income, which this filing covers, the previous tax table applies.
Second, you may not have entered all your 2307s (aka Withheld Tax Certificates) in the proper area in Taxumo. Once you have entered these, then these will be deducted from your tax dues.
Third, you may have filed an amendment for previous quarters and you did this amendment outside of Taxumo. Taxumo will use the data from your previous quarters' 1701Q submission to compute your Annual ITR. If you have any amendments/corrections in your quarterly submissions, there are 2 ways to make sure that Taxumo will capture the amended values: (1) If you file your amendment on Taxumo, then Taxumo will use the latest amended version of the 1701Q. (2) During the Annual ITR process, Taxumo will ask you for values relating to previous quarters -- enter the updated values in these fields.
And that's it. Taxumo ensures that the right forms, rates, and schedules are used in your filings but if you do have any questions, we're always happy to answer. Thanks!