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Complete your US Federal Income Tax Form 1040 using my Microsoft Excel spreadsheet income tax calculator.
Navigate between pages using the drop down in the upper left corner.
UPDATE:
The 2025 Federal Income Tax Spreadsheet (c)
is now available.
The 2026 Federal Income Tax Forecast Spreadsheet
is now available.
Most sheets have been updated but this is still a work-in-progress.
UPDATE:
The 2025 Federal Income Tax Spreadsheet (c)
is now available.
The 2026 Federal Income Tax Forecast Spreadsheet
is now available.
Most sheets have been updated but this is still a work-in-progress.
Thank you for using my spreadsheets!
Thank you for using my spreadsheets!
Glenn Reeves
January 10, 2026
Glenn Reeves
January 10, 2026
As always, be sure to compare the spreadsheet output to your own calculations and
to actual IRS forms and instructions.
As always, be sure to compare the spreadsheet output to your own calculations and
to actual IRS forms and instructions.
Please let me know if you encounter any errors!
Thank you for using my spreadsheets!!
Please let me know if you encounter any errors!
Thank you for using my spreadsheets!!
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