Judith, do you use a commercially prepared/updated spreadsheet, or did you create it yourself?
Original Message:
Sent: 12-12-2025 12:14
From: JUDITH HOY
Subject: Which 2025–2026 Tax Changes Matter Most to You and How Do You Stay Organized?
The additional senior deduction is the one that most affects me. In the future, I'll look closer at the SALT increase, to consider itemizing.
As far as organization, I keep personal spreadsheets for federal taxes, linked to a years-long cash projection, both historical and prospective. As the tax spreadsheet is updated, the linked cash projection is also updated. A paper file holds relevant tax documents until taxes are filed.
The tax spreadsheet for the year is updated frequently throughout the year, which is handy especially as tax laws change. I keep a close eye on dividends and capital gains and post them as they happen. You could of course wait for monthly statements. My strategy of maximizing long-term capital gains at the zero percent rate has paid off handsomely.
The tax spreadsheet includes separate pages for each tax form, a page for Social Security, one for 1099's, etc. with respective limits on MAGI, tax brackets, etc. With Social Security, Medicare premiums, and now RMD's to monitor, the time spent on upkeep is well worth it.
The cash projection includes notes on strategy; with so many competing interests it can be hard to remember why I did what!
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JUDITH HOY
Original Message:
Sent: 12-09-2025 10:29
From: DAVE GILMER
Subject: Which 2025–2026 Tax Changes Matter Most to You and How Do You Stay Organized?
Hands down the extra $12,000 Senior deduction has the most impact on our savings and I'm using it by filling up the LTCG zero bracket with LTCG, that have sky-rocketed since 2022.
I keep organized with spreadsheets, one of which is a tax forecaster for each year that tracks my own general categories such as interest, dividends, ordinary income, RMDs , LTCG, STCG, pension, and SS all in a single row of a spreadsheet which calculates the Total Tax and effective tax. I check this with tax software to confirm its accuracy. I can then see year over year how these items change along with the tax brackets & standard deduction.
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DAVE GILMER
Original Message:
Sent: 12-08-2025 16:36
From: Jenna Brashear
Subject: Which 2025–2026 Tax Changes Matter Most to You and How Do You Stay Organized?
The new AAII 2025–2026 Tax Guide lays out a huge slate of changes: new deductions, shifting MAGI phaseouts, higher retirement contribution limits, expanded senior deductions, SALT cap increases, estate and gift thresholds and dozens of inflation-adjusted rules across investment income, Social Security, Medicare and more.
For many investors, the challenge isn't just knowing the rules-it's keeping track of them.
So I'd love to hear how others approach tax planning now that the landscape is more complicated than ever:
👉 With all the phaseouts, thresholds, MAGI definitions, and new deduction types, how do you stay organized?
Do you rely on a CPA, software like TurboTax, a personal spreadsheet, or some combination?
And on the strategy side:
👉 Which of the new 2025–2026 tax changes do you think will have the biggest impact on your own planning-and why?
Is it the enhanced senior deduction, higher SALT deduction cap, increased IRA/401(k)/HSA limits, QCD threshold changes, or something else entirely?
Curious how other investors are adapting, and if you haven't yet, the full article in AAII's annual Tax Guide is worth a read. It's a comprehensive walk-through of every key number shaping your 2025 and 2026 tax bill.
This article is part of The Individual Investor's Guide to Personal Tax Planning for 2025–2026. See all sections | Download complete PDF
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Jenna Brashear
AAII Community Manager
Chicago, IL
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