Pension Basics: Defined Benefit vs. Defined Contribution Plans

Defined benefit vs defined contribution comes down to what is promised. A defined benefit (DB) plan promises a pension worked out by a formula, usually from your pay and years of service. A defined contribution (DC) plan promises no set amount: money goes into an account in your name, and you get whatever it holds after investment gains and losses.¹

You can usually tell which one you hold from your latest statement: a projected yearly pension points to DB, an account balance to DC. That difference decides who carries the risk, what a job change does and what protects you if the employer fails. This part of our financial independence and retirement series takes each in turn, labelling rules by country (mainly the US and UK), and explains how the plans work, not which to choose.

Prefer to watch? The video covers the same ground as this article.

VideoDefined Benefit vs Defined Contribution: Pension BasicsWiserHours

Who carries the investment risk and the risk of a long life

The OECD’s Pensions at a Glance 2025 puts the core difference plainly: in defined contribution plans the members bear most of the risk, while in traditional defined benefit plans the sponsoring employers take on all of it.² Two risks matter most: investments doing badly, and living longer than the money was planned to last.

In a DB plan a bad year in the markets is the employer’s problem to fund; in a DC plan it lowers your balance.² Picture two invented colleagues who retire in the same week, just after a market fall. One receives what the DB formula promised; the other finds a DC pot smaller than a few months earlier and must decide whether to draw on it now or wait.

Longevity risk is the second half. In the US, a DB plan must offer you a life annuity: equal payments, often monthly, for the rest of your life.³ A DC pot is finite: the UK’s Financial Conduct Authority (FCA) lists running out of money in your lifetime among the risks of moving from a DB pension to a DC one.⁴

A DB pension is not risk-free either: its risk is whether the employer can keep paying, which is why the insurance schemes below exist. A DC saver should ask two questions: how big is the pot, and how many years must it pay for?

How each plan works out your pension

A DB plan calculates your pension from a formula; a DC plan’s value is what was paid in, plus or minus investment returns. The US Department of Labor’s sample DB formula pays 1 percent of your average salary over your last five years of work for every year of service.¹

Run that formula for an invented worker with 30 years of service and a final average salary of $60,000 (in 2026 US dollars) and it gives $18,000 a year. The arithmetic is ours and only illustrative; each plan sets its own formula. Because every year of service adds another slice, a DB pension rewards staying: on the same salary, 10 years of service would give $6,000 a year.

In a DC plan, such as a US 401(k), you, your employer or both pay into your account, and the money is usually invested for you. A cash balance plan blurs the line: it shows an account balance, yet in the US it is legally a DB plan, and investment swings do not directly change what it promises.¹

If a statement shows a balance, check the plan documents for the words “cash balance” before assuming it is DC. Either way, a pension that starts paying later shrinks the gap your own savings must cover, which is where it enters the calculation of an FI number.

Which employers still offer a defined benefit pension

In the US, private employers now mostly offer DC plans, while DB plans remain the norm in state and local government. Official figures from the US Bureau of Labor Statistics (BLS) show the split.

The study

Strong evidence

Pots in private firms, pensions in government (US employer survey, March 2025)

In private industry, 70 percent of workers had access to a DC plan and 14 percent to a DB plan. In state and local government the pattern reversed: 86 percent had access to a DB plan and 38 percent to a DC plan.⁵

For most US workers, then, the plan type comes with the sector: a public-school teacher and a developer at a software firm will usually meet different pension designs on day one. The survey covers private industry and state and local government only, and it counts who is offered a plan, not how well either type pays out.

The UK shows the same drift. The Pension Protection Fund’s Purple Book 2025 finds 91 percent of the DB schemes it covers closed to new members, and about 0.7 million members still building up benefits, roughly one in five of the 3.6 million in 2006.⁶ Across the OECD, DC and personal plans held more than half of pension assets in most reporting countries at the end of 2024, and the Netherlands is converting its DB plans to DC by 2028 under a 2023 law.²

Counting the public sector too, about a third of UK employees in a workplace pension were in DB schemes in 2024, on provisional figures from the Office for National Statistics (ONS). The sources record the shift rather than explain it, but the same ONS bulletin points to one difference, cost: UK employers must keep DB schemes funded well enough to pay future pensions, so contribution rates tend to be higher than for other types.⁷ When you compare job offers, then, set the plan type beside the salary: a DB pension can carry value that a pay slip does not show.

Changing jobs: a DB pension stays put, a DC pot can travel

A job change ends new contributions, not your rights to what has vested. In the US, the Department of Labor says a vested DB pension generally stays with the old plan until you claim it at retirement, while a DC balance can usually move to an individual retirement account (IRA) or, in some cases, a new employer’s plan.³

Vesting sets how much of the employer-funded part you keep. Under US federal law, a DB plan can make you wait up to 5 years for full vesting on a cliff schedule, or 7 on a graded one. In a DC plan your own contributions are always yours, while the employer’s matching contributions may take a few years to vest. On a cliff schedule, leaving a month before the vesting date can mean giving up what one more month would have secured. Cashing a DC balance out is usually possible, but you will owe taxes and possibly penalties, leaving less for retirement. The Department of Labor also advises keeping your contact details up to date with any former employer’s plan.³

GOV.UK’s guidance for the UK says you keep your workplace pension after changing jobs: the money stays invested and pays out at the scheme’s pension age. If you were in a DB scheme for less than 2 years, you may be able to take a refund of what you paid in or transfer its value, depending on the scheme’s rules.⁸ Over a career you may collect several plans of both types, so a short record of each one saves a search decades later.

Before you leave a job with a pension

• Find out whether the plan is DB, DC or a cash balance plan
• Check your vesting date for the employer-funded part
• Update your contact details with the plan
• Note the plan name and who runs it on a one-page list

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How each type is protected if the employer fails

A DB pension depends on the employer being able to pay, so the US and UK each run an insurance fund for these plans. In the US, the Pension Benefit Guaranty Corporation (PBGC) guarantees the basic benefits earned in a failed single-employer DB plan that it takes over, up to limits set by Congress; benefit increases made in the five years before a plan ends may not be fully covered.⁹

For a plan that ends in 2026, the most the PBGC guarantees for someone starting at 65 is about $7,790 a month as a single-life annuity, with lower limits at younger ages and for survivor options; the table that applies depends on the year the plan ends. Most benefits in plans the PBGC runs are below the maximum, but a pension above it might not be paid in full if the plan failed, so know whether your plan is insured and where you sit against the limit.¹⁰

The US government does not guarantee DC benefits, but federal law requires plan money to be held apart from the employer’s business, in a trust or insurance contract that the employer’s creditors cannot claim. The Department of Labor suggests checking that contributions taken from your pay reach the plan on time, and to contact its benefits advisors if you think your employer has been late in paying them in.³

In the UK, the Pension Protection Fund usually pays 100 percent compensation if you have reached the scheme’s pension age when the employer goes bust, and 90 percent if you are below it. A DC pot is not lost if the employer goes bust; if an FCA-authorised provider cannot pay, the Financial Services Compensation Scheme may step in.¹¹ Elsewhere, your own country’s pension regulator sets out the rules.

Defined benefit vs defined contribution, row by row

Neither type wins everywhere, and most workers get whichever type the employer offers. Each row’s verdict is our reading of the US and UK official sources above, describing where a type fits, not a tested finding or a recommendation.

Use the table to see which risks your own plans leave with you, and plan for those.

Before you trade a defined benefit promise for a pot

Swapping a DB pension for a pot or a lump sum cannot be reversed, and official sources in both countries urge caution. In the UK, the FCA and The Pensions Regulator believe it is in most people’s best interests to keep a DB pension, and depending on its value, the law may require you to take advice before transferring.⁴

In the US, some DB plans offer a lump sum in place of monthly payments. A 2016 Consumer Financial Protection Bureau (CFPB) blog post, since archived, noted that taking one shifts the job of making the money last, and of protecting it from inflationinflation: A general rise in the prices of goods and services over time, so that the same amount of money buys less. Returns are often reported after inflation, in real terms, to show what a gain is worth in buying power.Full entry in the glossary and fraud, from the employer to you, and warned against anyone promising high returns with low risk or pressing you to act quickly.¹²

In our reading, pressure to act fast is the common thread, so slowing down is the simplest defense.

Who to ask before you move, cash out or give up a pension

Giving up a DB promise, moving a pot or cashing it out is hard to undo, so get help before you act. These routes come from US and UK official sources; elsewhere, ask your country’s pension or financial regulator.

• Now: if someone contacts you out of the blue about your pension, end the contact. For UK readers, GOV.UK sends anyone worried about a pension scam to Report Fraud, and points to MoneyHelper for free, impartial information on transfers.¹⁴ In the US, the Federal Trade Commission takes reports of investment fraud and scams through its ReportFraud website.¹⁵
• Soon, before any transfer, lump sum or cash-out: get advice from a regulated adviser, and ask how that adviser is paid. BrokerCheck, a free FINRA tool, shows a US adviser’s record, including customer disputes and disciplinary events.¹⁶ In the UK, the FCA suggests its Firm Checker to confirm a firm is authorised for the service, and its Financial Services Register to check an individual.¹⁷
• Routine: in the UK, Pension Wise offers anyone over 50 a free appointment to talk through their pension options, though not final salary or career average schemes.¹⁸

The bottom line

Ask of any pension who pays when markets fall or a retirement runs long: mainly the employer in a defined benefit plan, mostly you in a defined contribution plan. Find out which type each of your plans is, what vests when you leave, and how each is protected. Before swapping a lifetime income for a pot, get regulated advice, and never decide on a phone call.