Many married couples planning retirement assume Social Security benefits will provide stable, tax-friendly income. However, a lesser-known tax rule can cause a large portion of those benefits to become taxable once additional retirement income is added. Financial experts say this issue often affects married couples more than single retirees.
Hidden Social Security Tax Issue for Married Couples
The Internal Revenue Service uses a formula called combined income to determine whether Social Security benefits are taxable.
Combined income includes:
- Adjusted gross income
- Nontaxable interest
- Half of Social Security benefits
Once combined income crosses certain limits, a portion of Social Security benefits becomes subject to federal income tax.
For married couples filing jointly, up to 85% of benefits can become taxable when combined income exceeds $44,000.
Example of How the Tax Situation Works
Consider a retired couple in their late 60s:
| Income Source | Annual Amount |
|---|---|
| Social Security (Spouse 1) | $21,600 |
| Social Security (Spouse 2) | $16,800 |
| Total Social Security | $38,400 |
| Retirement account withdrawals | $20,000 |
In this situation, the couple receives $58,400 in total retirement income.
When calculating combined income under IRS rules, a large portion of their Social Security benefits becomes taxable because their income exceeds the $44,000 threshold.
Why Married Couples Are Affected More
The tax thresholds for Social Security were established in 1983 and have not been adjusted for inflation.
This creates a growing issue for retirees today.
For comparison:
| Filing Status | Combined Income Threshold for 85% Taxation |
|---|---|
| Single | $34,000 |
| Married Filing Jointly | $44,000 |
While married couples have a higher threshold, the difference is only $10,000, even though two people are typically drawing income and covering higher living expenses.
As retirement incomes rise due to inflation and withdrawals from savings, more couples are crossing the taxable threshold.
How Retirement Withdrawals Affect Taxes
Another major factor is where retirees withdraw money from.
Withdrawals from traditional retirement accounts such as 401(k)s or traditional IRAs count toward combined income.
However, withdrawals from a Roth IRA usually do not count toward the Social Security taxation formula.
This difference can significantly impact how much of a couple’s Social Security benefits are taxed.
Strategies That Can Reduce Social Security Taxes
Financial planners often suggest several strategies to help retirees reduce the tax impact.
Possible approaches include:
- Using Roth IRA withdrawals instead of traditional IRA withdrawals
- Converting traditional IRA funds to Roth accounts before claiming Social Security
- Staggering when each spouse claims benefits
- Planning retirement withdrawals carefully each year
These strategies can lower combined income and potentially reduce the percentage of benefits subject to taxes.
Common Mistake Married Couples Make
One of the biggest mistakes couples make is claiming Social Security for both spouses at the same time without analyzing the tax impact.
Without planning, combined income may rise quickly once both benefits and retirement withdrawals begin.
Financial experts say that running tax projections before claiming benefits can help avoid unexpected tax bills.
FAQ
Why are Social Security benefits taxed for some retirees?
The IRS taxes Social Security benefits when a retiree’s combined income exceeds certain thresholds, which include other retirement income and half of their Social Security benefits.
What is combined income for Social Security taxes?
Combined income is calculated by adding adjusted gross income, nontaxable interest, and half of Social Security benefits.
At what income level do Social Security benefits become taxable?
For married couples filing jointly, benefits may become taxable once combined income exceeds $32,000, with up to 85% taxable after $44,000.
Why are married couples affected more by Social Security taxes?
The income threshold for married couples is only slightly higher than for single filers, even though couples typically have higher combined retirement income.
How can retirees reduce Social Security taxes?
Using Roth IRA withdrawals, converting traditional retirement accounts to Roth accounts, and carefully planning benefit claims can help reduce the amount of Social Security income subject to tax.
