The tax world is undoubtedly complex and there is much confusion over if or how Social Security benefits are taxable. Like most aspects of the tax code, the answer depends on your individual situation.
How Social Security is Taxed
To determine if or how much of your Social Security is taxable, the IRS uses a measure called “provisional income” (also known as “combined income”).
This is calculated by adding your Adjusted Gross Income (AGI) minus any Social Security benefits + Nontaxable interest + ½ of Social Security benefits.
Provisional income is then used to determine what percentage of your Social Security benefits may be subject to income tax.
2026 Taxation Thresholds:
| Percent taxable | Individual | Married Filing Jointly |
| 0% (not taxable) | Less than $25,000 | Less than $32,000 |
| Up to 50% | $25,000 – $34,000 | $32,000 – $44,000 |
| Up to 85% | Greater than $34,000 | Greater than $44,000 |
These thresholds operate on a sliding scale, meaning the exact percentage of your benefits that becomes taxable depends on your income mix.
Keep in mind, this percentage represents the portion of benefits subject to tax—not your tax rate. Income is still taxed at your ordinary income tax rates.
Also, if you are married filing separately, these thresholds do not apply. In most cases, up to 85% of benefits will be taxable regardless of income.
Why Many Retirees Pay Taxes on Benefits
These income thresholds were set decades ago and are not indexed for inflation. As a result, most retirees end up paying taxes on at least some of their benefits. In fact, even moderate-income retirees can fall into the 85% inclusion range. This also means that as benefits increase, more is taxable each year.
Planning Considerations
The taxation model of Social Security adds complexity to tax planning decisions. Strategies that increase income, even if they seem tax-efficient, can have unintended consequences.
If you are considering a Roth conversion or harvesting capital gains, you will want to review how these strategies may affect the taxation of your Social Security.
For example:
Capital Gains Harvesting
You may be in the 0% capital gains bracket, but realizing gains increases provisional income. This can cause more of your Social Security benefits to become taxable, creating an unintended tax consequence.
Roth Conversions
You may intend to convert within the 12% tax bracket, but the added income could increase the taxable portion of your Social Security. This can result in a higher effective tax cost than expected.
Because of this interaction, it’s important to evaluate strategies holistically rather than in isolation. A financial advisor can help you review strategies and tax implications.
Learn more about Roth Conversions.
The One Big Beautiful Bill Act’s Impact
There has been a lot of confusion around how the One Big Beautiful Bill Act (OBBBA) impacted the taxation of Social Security and many believe that this act has made benefits non-taxable. This is not the case.
OBBBA introduced the Enhanced Senior Deduction as a means to reduce the tax burden of some seniors and indirectly offset the taxation of Social Security.
The Enhanced Senior Deduction is an additional $6,000 deduction per person for those age 65 and over. This is available to all seniors, subject to income limitations, whether or not they itemize deductions. However, if you are married filing separately, you will not qualify for this deduction.
The Enhanced Senior Deduction starts to phase out over certain income limits. This means that you may qualify for a partial deduction or not qualify at all. The deduction begins to phase out at a Modified Adjusted Gross Income (MAGI) of $75,000 (single) and $150,000 (joint), with the deduction reduced by 6 cents for every $1 over the threshold, ending at $175,000 and $250,000 respectively. Like the Social Security thresholds, these limits are not indexed for inflation.
This deduction is not tied to Social Security benefits in any way. You may qualify regardless of whether your benefits are taxable, or even if you haven’t started taking benefits yet. Similarly, the deduction does not start early if you begin benefits prior to age 65.
Because eligibility depends on income, this deduction should be considered when evaluating tax strategies that increase income in a given year.
Conclusion
Most individuals receiving Social Security benefits will pay at least some tax on those benefits. While the Enhanced Senior Deduction may help offset some of this burden, it does not eliminate the taxation of Social Security.
Careful planning is essential to avoid unintended tax consequences. Working with a qualified advisor can help you evaluate strategies and make informed decisions based on your specific situation.
Disclaimer
This information is for educational purposes only and should not be considered tax or financial advice. Please consult a fee-only Certified Financial Planner™ professional to understand how these rules apply to your personal situation.
