You get money every month—but is it fully taxable?

For millions of retirees and beneficiaries, pensions and annuities form the core of monthly income. But few topics create more confusion than how much of that stream is taxable. Some taxpayers assume everything is taxable. Others assume “retirement income” means tax-free. The truth? The IRS has a detailed set of rules under Publication 575, and whether your payments are fully or partially taxable depends on how the plan was funded and how much basis you have in it.

This guide breaks down the moving parts so you can anticipate what your tax return will look like—before the Forms 1099-R start arriving in January.

1. Start Here: Why Some Pension or Annuity Income Is Taxable

Every pension or annuity payment has two theoretical components:

1. Return of your own contributions (already taxed — not taxable again).
2. Employer contributions and earnings (never taxed before — taxable now).

If all the money in your plan was funded by your employer, or from pre-tax dollars (think: traditional IRA rollovers, pre-tax 401(k) contributions), then 100% of the monthly check is taxable.

If you contributed after-tax money, you have “basis” in your contract. That basis is returned to you gradually, tax-free, over the life of the payments.

2. Simplified Method vs. General Rule

Publication 575 gives two ways to calculate the taxable portion:

The Simplified Method (most common)

You must use the Simplified Method if you receive an annuity from a qualified plan, including:

• Traditional employer pensions
• 401(k)s or 403(b)s rolled into annuity payments
• Defined-benefit plans
• Qualified survivor annuities

Under this method, the IRS gives you a standard life-expectancy number based on your age at the annuity start date. You then divide your after-tax contributions (your “basis”) by that number.

The result?
A fixed monthly tax-free portion, with the rest taxable.

The General Rule (more complex; used for nonqualified plans)

This rule applies to nonqualified contracts, certain private annuities, and unusual arrangements.

The taxable portion is based on:

• Your investment in the contract (basis)
• Expected return over your life or a guaranteed period
• Contract terms

It produces a similar result—part taxable, part tax-free—until your basis is fully recovered.

3. When Is the Entire Amount Taxable?

Your payments are fully taxable if:

• You had no after-tax contributions, or
• The plan was funded entirely by employer dollars, or
• You rolled pre-tax funds into the annuity, or
• You’ve already fully recovered your basis from previous payments.

Once your basis is recovered, 100% of future payments are taxable.

This often surprises retirees who have been receiving partially taxable payments for years.

4. The Special Case: IRA Annuities

If your annuity comes from a traditional IRA, almost always 100% of the payment is taxable.

Why?
Because IRA contributions are usually pre-tax and have no separate basis (unless you filed Form 8606 each year you made nondeductible IRA contributions).

5. Survivor Benefits: How They’re Taxed

If you’re receiving survivor benefits from your spouse’s pension:

• You generally continue to use the same method the original retiree was using (Simplified Method).
• If the retiree had basis remaining at death, you continue receiving tax-free amounts until it’s exhausted.
• Lump-sum death benefits may follow special rules depending on the plan type.

6. Lump-Sum Distributions vs. Monthly Payments

Not all pensions pay monthly. Some employers offer a lump-sum buyout.

Lump-sum distributions are typically fully taxable unless you have basis. You may also elect:

• Rollover to an IRA (avoids immediate tax)
• 10-year averaging (rarely used; for certain long-tenured employees)
• Capital-gain treatment for very old pre-1974 service (almost never applicable today)

Monthly annuity payments defer tax over time, which many retirees prefer for predictable budgeting.

7. Withholding and Forms You’ll Receive

Expect a Form 1099-R each January showing:

• Gross distribution
• Taxable amount
• Whether any basis was included
• Codes describing the type of distribution

Federal withholding applies automatically unless you file a W-4P to adjust it.

8. Planning Tips to Lower the Tax Hit

Here are smart tax strategies:

✔ Use Form W-4P to avoid under-withholding

Retirement income still triggers estimated tax issues.

✔ Consider “filling up” lower tax brackets

If you are delaying Social Security, using annuity payouts strategically can soften future tax cliffs.

✔ Track your basis

If you contributed after-tax dollars, keep your plan statements and prior 1099-Rs. The IRS requires proof.

✔ Consider Roth conversion timing

If you are offered a lump-sum rollover alternative, you may convert those funds to a Roth at a strategically beneficial time.

Conclusion

Pension and annuity taxation isn’t all-or-nothing. The key question is: Did you put in after-tax dollars? Publication 575 guides you through the calculations, but the simplified rules make it manageable for most retirees. Whether your payment is fully taxable or only partially taxable depends entirely on your basis—and understanding that can help prevent surprises come tax season.

At Dino Tax Co, we help clients navigate tax matters ranging from unfiled returns to IRS letters and levies and everything in between with clarity and confidence. If you’d like guidance on your situation, schedule a consultation today. Call or text (713) 397-4678 or email davie@dinotaxco.com. We’re here to help you take the next step.