Will Social Security Run Out? The 2033 Trust Fund Depletion Explained

Updated May 2026. Based on the 2025 Social Security Trustees Report (SSA.gov) and March 2026 CBO projections.

How Social Security's Finances Actually Work

Social Security is primarily a pay-as-you-go system: the 12.4% payroll tax on today's workers' wages funds today's retirees' benefits. When more taxes flow in than benefits go out, the surplus accumulates in two federal trust funds — the Old Age and Survivors Insurance (OASI) fund (which covers retirement and survivors) and the Disability Insurance (DI) fund.

Since 2010, the retirement program has run a cash-flow deficit: benefits paid exceed payroll taxes collected. The trust funds bridge that gap by redeeming U.S. Treasury bonds held in the fund. Each year, the trust fund balance shrinks — until it hits zero.

The critical distinction "running out" obscures: Even after the trust fund reaches zero, payroll taxes keep flowing in. As of the 2025 Trustees Report, those ongoing taxes are enough to fund roughly 81% of scheduled benefits.¹ Benefits do not stop — they get reduced proportionally, unless Congress acts first.

Think of it this way: the trust fund is a buffer. Depletion means the buffer is gone and the program can only pay what it currently collects — not zero, but less than promised.

Current Depletion Projections

Three authoritative projections as of mid-2026:

The gap between the Trustees and CBO reflects different macroeconomic assumptions. CBO's March 2026 update assumes slightly lower GDP growth and labor productivity. Neither estimate is a firm prediction — both are projections under specified assumptions.

Why did the date move up? Both the 2025 Trustees Report and the March 2026 CBO update moved depletion one year earlier than their prior forecasts, primarily because the Social Security Fairness Act (signed January 5, 2025) repealed the Windfall Elimination Provision (WEP) and Government Pension Offset (GPO), adding an estimated $190 billion in new benefit payments through 2035.³ Good news for affected retirees — but it accelerated the funding timeline.

The 75-year actuarial deficit for the combined OASDI program is 3.82% of taxable payroll.¹ That's the size of the shortfall that needs to be closed, expressed as a share of wages subject to payroll tax.

What Happens at Depletion: The 81% Number

Per the 2025 Trustees Report, if the combined OASDI trust fund depletes in 2034 and no legislation is passed, Social Security can pay 81% of scheduled benefits from ongoing payroll taxes — declining gradually to about 72% by 2099 as the demographic gap widens.¹

In practice, an 81% payable rate means a roughly 19% benefit reduction. In dollars:

For a married couple with two Social Security checks, the combined reduction at 81% payable could exceed $900/month — $10,800/year of retirement income that would vanish without legislation.

Important caveat: these projections assume no Congressional action. Every year that Congress doesn't act, the required "fix" gets slightly larger — so there's both urgency and, historically, political pressure to act before the window closes.

History: Congress Has Always Acted

Social Security has faced funding crises before. The most severe was 1983, when the trust fund was within months of being unable to send benefit checks. The National Commission on Social Security Reform (the "Greenspan Commission") produced a bipartisan package signed into law that included:

• Gradually raising the full retirement age from 65 to 67, phased in for people born 1938–1960⁵
• Increasing the payroll tax rate for employees and employers
• Taxing up to 50% of Social Security benefits for higher-income recipients (the IRC §86 thresholds still in effect today, still not inflation-adjusted)⁶
• Bringing all new federal employees into Social Security for the first time

Every year since 1935, Social Security has paid every benefit on time and in full. Congress has intervened repeatedly — not because fixing Social Security is popular, but because ~70 million beneficiaries make cutting it politically catastrophic. The actuarial math is solvable; the question is whether Congress acts before or after a deadline forces the issue.

That history doesn't guarantee future action, and the political environment in 2026 is more divided than 1983. But the institutional incentives are the same.

Legislative Options on the Table

Closing a 3.82% of payroll actuarial deficit requires some combination of revenue increases and benefit adjustments. The main options and their tradeoffs:

The Penn Wharton Budget Model analyzed six options in March 2026 and found that none achieves 75-year solvency on its own without significant costs.⁸ The consensus among budget analysts is that the fix will involve a combination — some revenue increase, some benefit adjustment, probably phased in over time and heavily grandfathered for people near retirement age.

Calculator: What a Benefit Cut Would Mean for You

Enter your expected FRA benefit to see monthly amounts at each claiming age under different trust fund scenarios — and what the break-even ages look like.

Should You Claim Earlier Because of the Trust Fund?

This is the most common question advisors hear on this topic. The intuition is: "If Social Security might be cut, shouldn't I grab my benefits before the cut kicks in?"

The math usually says no — but it depends on your age. Here's the breakdown:

If you're claiming before 2033

Benefits that have already started will not be retroactively cut. A 63-year-old who claims today locks in a payment stream. But "claiming early to beat the cut" only helps if you can actually start before depletion — and then only for the years between your claim date and the depletion date. After depletion, your benefit gets reduced to 81% just like everyone else's.

Claiming at 62 in 2026 instead of waiting to 70 in 2034 means you collect roughly 8 years of pre-cut payments — but at a permanently reduced benefit level (30% less than FRA for anyone born 1960+). The question is whether those 8 years of partial payments outweigh the larger benefit you'd have received for the rest of your life.

The proportional cut insight

Here's the key mathematical fact most "claim early for the trust fund" arguments miss: a proportional benefit cut affects all claiming ages identically.

If the program pays 81% of scheduled benefits, a person who claimed at 62 receives 81% of their reduced amount. A person who claimed at 70 receives 81% of their larger amount. The ratio between the two is unchanged. The break-even age between claiming at 62 versus 70 is essentially the same at 81% as at 100%.

Example: FRA benefit = $2,500, FRA = 67

• Full benefits: $1,750/mo at 62 vs. $3,100/mo at 70. Break-even at ~age 80.
• 81% benefits: $1,418/mo at 62 vs. $2,511/mo at 70. Break-even at ~age 80.

The break-even age barely moves. The proportional cut doesn't change the calculus.

The grandfathering expectation

Historical precedent strongly suggests that any Congressional fix will protect people near retirement. The 1983 reforms raised the FRA only for workers born after 1937, giving affected cohorts at least 10 years' notice. Proposals currently in circulation include provisions protecting anyone age 55 or older from benefit cuts.

If you're 60 today and Congress eventually passes a fix that protects people within 10 years of retirement, your benefits could be fully protected even if you claim after 2033.

What the trust fund situation does mean for planning

Specific planning implications that do make sense given the trust fund outlook:

• Don't count on 100% of your scheduled SS benefit in late retirement. A 20% haircut to your SS income projection is prudent planning, not pessimism.
• The Roth conversion window is more valuable, not less. If SS income is uncertain, having a tax-free income stream matters more. The gap years between retirement and SS start are ideal for conversions. See our Roth conversion window guide.
• For couples, the survivor benefit logic is unchanged. The higher earner delaying to 70 maximizes the survivor's income regardless of what percentage of benefits is payable. A 19% proportional cut still leaves the delayed benefit well ahead of the early-claimed benefit.
• Monitor legislative developments. A Congressional fix is likely before 2033 — but the structure of the fix matters for planning. Changes to FRA, the wage base, or COLA formulas affect planning differently for different households.

Related guides: Maximize your Social Security benefits · Bridge strategy: delay SS with portfolio drawdown · 7 costly Social Security mistakes to avoid