Darin Weidauer, licensed insurance agent · NPN 18580338National number (424) 295-0627 · darinweidauer@ecos.care
The Fifty-Five Workbook · 3 worksheets

Chapter 25: Qualified Charitable Distributions

The worksheets from Chapter 25 of Fifty-Five. Type your own numbers, or try an example from the book to see how each one works.

Before you start

These worksheets are educational. Every answer is an estimate from the figures you type, worked out in your browser. Nothing you enter is sent to us or stored. They are not tax, legal or investment advice, and they are not a recommendation. Darin Weidauer is not a CPA, attorney, financial planner or registered investment adviser. Have a tax professional check any large decision before you act on it.

Where a box is filled in for you, it holds a figure published by Medicare, Social Security or the IRS, and the source is shown under the worksheet. These figures change every year. Check the current one at the source and type it over ours before you rely on an answer.

The table these worksheets use

The 2026 IRMAA table

Your MAGI from two years earlier picks your row. Type your MAGI into a calculator below and it finds the row for you. Or find it here and work the paper worksheet.

2026 Medicare Part B premium and Part D surcharge by income, individual and joint returns
RowIndividual return MAGIJoint return MAGIPart B premium, a monthPart D surcharge, a month
1$109,000 or less$218,000 or less$202.90$0.00
2Over $109,000 up to $137,000Over $218,000 up to $274,000$284.10$14.50
3Over $137,000 up to $171,000Over $274,000 up to $342,000$405.80$37.50
4Over $171,000 up to $205,000Over $342,000 up to $410,000$527.50$60.40
5Over $205,000 and under $500,000Over $410,000 and under $750,000$649.20$83.30
6$500,000 or more$750,000 or more$689.90$91.00

Married filing separately, if you lived with your spouse at any time in the year

2026 Medicare Part B premium and Part D surcharge by income, married filing separately
RowMAGIPart B premium, a monthPart D surcharge, a month
1$109,000 or less$202.90$0.00
2Over $109,000 and under $391,000$649.20$83.30
3$391,000 or more$689.90$91.00

MAGI here is your adjusted gross income plus any tax-exempt interest. The Part D surcharge is added to your plan's own premium. Each person on Medicare pays these amounts.

Where these figures come from: The 2026 Part B premium and Part D surcharge for every row of the IRMAA table, used when you type your MAGI (CMS, 2026 Medicare Parts A & B Premiums and Deductibles); The 2026 IRMAA income lines for individual, joint and married-filing-separately returns (SSA, Premiums: Rules for Higher-Income Beneficiaries). They are the 2026 amounts and they change every year.

Worksheet 25.1

What a QCD saves on taxes

The federal income tax a qualified charitable distribution saves, because the gift never shows up in your income. If you itemize, it also shows how that compares with a gift by check.

The formula: If you take the standard deduction: QCD amount × Your torpedo multiplier × Your bracket = Tax you save

The calculator needs JavaScript. The paper worksheet below does not: it is the same arithmetic, written out.

The paper worksheet

QCD amount $__________ × Torpedo multiplier ______ × Your bracket, as a decimal 0.______ = Tax you save $__________

Walk through it, step by step

  1. Decide how much you'll give this year to charities that accept QCDs.
  2. Work out your taxable Social Security, and whether you're in the torpedo (Chapter 24).
  3. Pick your multiplier: 1.85, 1.5 or 1.
  4. Find your bracket (Chapter 7).
  5. Multiply.

Check your answer

  • If you take the standard deduction, your saving should be at least your gift × your bracket.
  • If you itemize, your income tax saving should be small. Look at the Medicare check below instead.

Figures this worksheet uses, and where they come from: The 50% and 85% rules for taxable Social Security, which give the 1.5 and 1.85 multipliers (IRS, Publication 915); A QCD is left out of income (IRS, Publication 590-B).

Worksheet 25.2

The Medicare check

Where a QCD leaves your MAGI against the IRMAA line beneath you, and what dropping a row is worth in Medicare premiums.

The formula: MAGI without the QCD − (QCD × Torpedo multiplier) = MAGI with the QCD. Compare with the IRMAA line.

The calculator needs JavaScript. The paper worksheet below does not: it is the same arithmetic, written out.

The paper worksheet

QCD $__________ × Torpedo multiplier ______ = MAGI drop $__________

MAGI without the QCD $__________ − MAGI drop $__________ = MAGI with the QCD $__________

IRMAA line $__________ − MAGI with the QCD $__________ = Room under the line $__________

Walk through it, step by step

  1. Work out your MAGI for the year without the QCD (Chapter 3's worksheet, or Chapter 24 if you're in the torpedo).
  2. Pick your multiplier: 1.85 in the torpedo, 1.5 between the lower lines, 1 if 85% of your Social Security is already taxable.
  3. Multiply your planned QCD by it. That's your MAGI drop.
  4. Subtract the drop from your MAGI.
  5. Subtract the result from the IRMAA line for your filing status.

Check your answer

  • If your room under the line is negative, you're still over. A bigger QCD, or one from your spouse's IRA, might close the gap.
  • Remember the two-year lookback (Chapter 11). A QCD this year lowers your premiums two years from now.

Figures this worksheet uses, and where they come from: The 2026 Part B premium and Part D surcharge for every row of the IRMAA table, used when you type your MAGI (CMS, 2026 Medicare Parts A & B Premiums and Deductibles); The 2026 IRMAA income lines for individual, joint and married-filing-separately returns (SSA, Premiums: Rules for Higher-Income Beneficiaries); The 50% and 85% rules for taxable Social Security, which give the 1.5 and 1.85 multipliers (IRS, Publication 915).

Worksheet 25.3

Your RMD after the QCD

How much of this year's RMD is left to take as a regular, taxable withdrawal once your QCDs are counted.

The formula: This year's RMD − QCDs this year = What you still have to take out (and pay tax on)

The calculator needs JavaScript. The paper worksheet below does not: it is the same arithmetic, written out.

The paper worksheet

RMD $__________ − QCDs $__________ = Still to take $__________

If the answer is zero or less, your QCDs have covered your whole RMD.

Walk through it, step by step

  1. Figure this year's RMD (Chapter 23).
  2. Add up the QCDs you've made or plan to make this year.
  3. Subtract. If the answer is more than zero, that's what you still have to take out, and it's taxable.
  4. Do the QCDs first in the year, before you take the rest of the RMD.

Check your answer

  • Your QCDs plus what you still have to take should equal your RMD, unless your QCDs were more than it.
  • Your QCDs can't be more than $111,000 each (2026).

Figures this worksheet uses, and where they come from: 2026 QCD limit: $111,000 for each person (IRS, Notice 2025-67); QCDs count toward the year's RMD and are left out of income (IRS, Publication 590-B).

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