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TurboTax automatically calculates the additional senior deduction based on your date of birth and income. If you qualify, the deduction will appear on your Form 1040 on line 13b. You can see the calculation on Schedule 1-A, Part V, line 37. No additional action is required on your part. Taxpayers aged 65 or older may qualify for an additional deduction of $6,000 ($12,000 for those filing Married Filing Jointly). To be eligible, you must meet all of the following criteria: Be 65 or older by December 31, 2025 File as Married Filing Jointly (MFJ)if you are married Have a Modified Adjusted Gross Income under $75,000 ($150,000 for MFJ). The deduction phases out for taxpayers with higher incomes. For more details, review the TurboTax article Tax Counseling for Seniors and the IRS Fact Sheet Deductions for Seniors for more information.

You didn't say which IRS instructions or formulas you are using. There are 7 different methods that can be used to calculate the tax on Form 1040 or 1040-SR line 16, depending on what types of income you have and other things in your tax return. The conditions for determining which of the 7 methods to use are explained starting on page 36 of the 2025 IRS Instructions for Form 1040 and 1040-SR. If you used the Tax Computation Worksheet on page 80 of the IRS instructions, there is probably something in your tax return that requires using one of the other methods. The most common reason that you cannot use the Tax Computation Worksheet is that your income includes qualified dividends or long-term capital gains, which are taxed at lower rates. In that case you probably have to use the Qualified Dividends and Capital Gain Tax Worksheet, or possibly the Schedule D Tax Worksheet. If you are using the desktop TurboTax software you can see which method TurboTax used by looking at the 7 checkboxes in the Tax Smart Worksheet in forms mode. The Tax Smart Worksheet is between lines 15 and 16 in the first section of the "Form 1040 or Form 1040-SR Worksheet."  

I'm running into this problem as well.  Is someone able to help?  I'm not seeing the question when I go back through "continue" after Wages & Income.  I'm only getting the foreign currency question.  Additionally, I don't see "form mode". Any help would be appreciated.

@ chasetuller2004  Currently the amending process is showing to become available on February 25-26.   In the meantime do not make any changes in your return.  It has to start off exactly as it was when filed.   You should wait on any Federal refund to arrive (if applicable) before amending.   If you amend the Federal return, you may also have to amend the state return (if applicable.)

If you have not already filed, you can go back to Wages and Income, then Self-employment income and expenses, and revisit your Sch C activity and edit as needed.  See the following link for further assistance; Where do I enter Schedule C?   If you already filed, then you will need to amend your tax return if you need to make any changes.  Amending your return is expected to be available in TurboTax on February 25, 2026.  Here's a link that gives more information on how to amend your tax return; How do I amend my federal tax return for this year?

If you want to have viewing/printing privileges of all the forms in your return, you would have to pay for your online product in advance.  Then you can download/view/print a PDF or specific form at any time you wish.   But you can't make direct entries on forms like you can in desktop TurboTax.   If you want to do that, we can tell you how.  Paying in advance also locks in the price.  Prices typically increase on March 1.     However, be aware that if you pay in advance, you won't be able to clear your return and start it over.   You can still edit it, but you can't start from scratch.