why has my taxable social security income increased from earlier 2025 calculations?

[helenwhatley]

SS taxable income increased from 14,366 to 19,546 in different versions of tax forms. nothing has been filed, but lowers my refund significantly. No other parameters have changed.

[dmertz · Accepted solution]

The amount of taxable Social Security income on Form 1040 line 6b depends on the amount of other taxable income on your tax return.  The change from $14,366 to $19,546 implies that you added to your tax return at least $6,094 of other taxable income between these two observations of line 6b.