His California Public Pension Once Cost Him Up to $643 a Month in Social Security. A Federal Law Erased the Cut. Now His Pension Fund Scores a 100% Gain on a SpaceX-Linked Investment

Picture Frank, a hypothetical 68-year-old in Sacramento. He spent 25 years at a California public agency that never withheld Social Security taxes, and that job pays him a pension of $3,000 a month. Before that, he spent 15 years in private-sector jobs that did pay into Social Security, which earned him a retirement benefit of his own.

This week Frank saw a headline that Calpers had booked a 100% gain on a radio spectrum investment after a deal involving SpaceX (NASDAQ:SPCX | SPCX Price Prediction). It’s natural to wonder whether a windfall like that reaches his monthly benefit. That gain stays inside the pension fund. What actually raised his check was a federal law signed nearly two years ago.

How a Public Pension Used to Shrink His Check

For decades, two rules affected people like Frank. The Windfall Elimination Provision (WEP) reduced the benefit people earned in jobs that paid Social Security taxes if they also received a pension from work that didn’t. The Government Pension Offset reduced spouse and survivor checks.

Here’s the back-of-the-napkin math on the first rule. Social Security’s standard formula replaces 90% of the first portion of average monthly earnings. For workers with fewer than 21 years of substantial covered earnings, the old rule lowered that percentage to 40%.

For someone who first qualified in 2023, the maximum WEP cut was $557.50 a month, before subsequent adjustments. Frank’s actual cut would depend on his eligibility year and earnings history.

The second rule could hit even harder. It reduced spouse and survivor benefits by two-thirds of the government pension. On a $3,000 pension like Frank’s, that meant a $2,000 monthly offset. For someone otherwise eligible for a $1,500 survivor benefit, the offset would have wiped out the entire payment.

Many pension members never faced either rule. Social Security says about 72% of state and local public employees work in jobs covered by Social Security.

What the Social Security Fairness Act Fixed

The Fairness Act became law on January 5, 2025. It ended both rules for benefits payable from January 2024 forward. The administration recalculated monthly checks and sent lump sums covering the increase back to that month.

By July 7, 2025, it had sent more than 3.1 million payments totaling $17 billion.

How much each person gained depended on their work and pension history. The agency says some saw very little change, while others became eligible for over $1,000 more each month. Frank’s full benefit will also get the 3.6% cost-of-living increase for 2027. Each future raise now builds on the full, unreduced amount.

Why a 100% Fund Return Leaves His Benefit Untouched

Bloomberg reported that CalPERS roughly doubled its investment in radio-spectrum assets connected to a SpaceX acquisition. That’s a different holding from simply owning SpaceX shares. Gains like this improve the fund’s investment position, although its long-term performance depends on more than one successful deal.

Our retiree’s pension is set by a formula tied to his salary and years of service, so the gain doesn’t raise his monthly payment. His Social Security benefit comes from his covered earnings record and federal law. The fund’s returns play no part in that calculation, and they had no role in the repeal.

Where the Bigger Check Meets the Tax Bill

A larger monthly benefit can mean a larger tax bill. Federal tax on benefits starts once your other income plus half your Social Security tops $25,000 for single filers or $32,000 for joint filers. Frank’s $36,000 annual pension puts him above the first threshold for either filing status. Depending on his other income and marital status, up to 85% of his Social Security benefits could be taxable.

That’s a good problem to have, but it can still surprise someone in April. Social Security doesn’t withhold federal income tax unless you request it. Frank can arrange voluntary withholding through his online Social Security account or Form W-4V, potentially avoiding a larger tax bill later.

Two Moves Worth Making Before Year-End

First, confirm that the repeal reached your own record. If you have a pension from work that didn’t pay Social Security taxes and never got a notice that your benefit changed, check your online Social Security account or call the agency. Widows and widowers who never applied for survivor benefits because the offset would have erased them may need to file now (we put the survivor-benefit math couples most often get wrong into a free guide here: Widow’s Math). Benefits you never apply for are the easiest ones to lose.

Second, read headlines about pension fund returns for what they are: news about the health of the fund that pays your pension. Strong investment returns support the pension fund’s finances, although they don’t automatically increase your monthly payment.

Everyone’s mix of covered work, pension size, and marital history is different, and those details can shift the numbers by hundreds of dollars a month. Checking your own record is the best way to know where you stand.

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