What-If worksheet standard deduction issues

Forum|Forum|7 days ago
September 10, 2026
5 replies
38 views

I’m using TurboTax 2025 What-If for a couple with younger spouse turning 65 in 2026. I checked the box to use 2026 tax rates. The standard deduction doesn’t seem to recognize that both people are now at least 65 since it shows $33,850 instead of the correct $35,500. Looks like a bug for someone turning 65 in the next tax year.

So I overrode the figure, but then line 40, Income after deduction, did not change.

I ended up working around this by increasing the QBI deduction on line 41a.

Any hope on getting these issues fixed before TurboTax 2026?

Best answer by VolvoGirl

They figured out….
And even if the age is wrong on line 3 of the worksheet, I can change the # on line 38 to indicate how many individuals (i.e. taxpayer or spouse0 )are either age 65 or older..or also blind…...that affects the std deduction in line 38 to the correct value (as long as the Itemized deductions at the very bottom of the worksheet have been reduced or cleared out )

M-MTax

Level 15

There is unfortunately very little hope that Intuit will patch these specific What-If worksheet bugs before TurboTax 2026 is released.

The TurboTax What-If Worksheet is designed as a rough predictive tool rather than a fully dynamic tax engine for future years, meaning deep logical or cascading field bugs for future years are rarely updated in the current year's software cycle.

M-MTax

Level 15

When you check the box to use 2026 tax rates in the 2025 software, the system applies the projected tax brackets and baseline standard deductions ($32,200 for MFJ). However, TurboTax's underlying age logic remains anchored to the birthdates and age calculations of the 2025 tax year return.

Because your younger spouse is not 65 by the end of 2025, the software fails to look ahead and apply the additional 2026 age 65+ standard deduction ($1,650 per spouse). Instead, it likely only credited the older spouse's extra deduction ($32,200 + $1,650 = $33,850), completely missing the second $1,650 that brings you to $35,500.