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FundsForBudget > Personal Finance > Retirement > Cash Balance Plan vs. 401(k): Key Differences for Retirement
Retirement

Cash Balance Plan vs. 401(k): Key Differences for Retirement

TSP Staff By TSP Staff Last updated: August 8, 2025 9 Min Read
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Cash balance plans and 401(k)s are both employer-sponsored retirement options, but they work differently. A cash balance plan is a type of pension that promises a set payout at retirement based on a formula, while a 401(k) depends on how much you contribute and how your investments perform. The choice between both affects your savings growth, retirement income and flexibility in managing your money.

A financial advisor can help you compare retirement plans and decide which best supports your goals.

How a Cash Balance Plan Works

A cash balance plan is a type of defined benefit retirement plan that blends features of traditional pensions with those of more familiar 401(k) accounts. Unlike a 401(k), where the account balance depends on investment performance, a cash balance plan promises a specific benefit at retirement, calculated using a set formula. Each year, the employer credits a participant’s account with a percentage of their salary plus a guaranteed interest rate, making the growth of the account more predictable.

The handling of contributions and interest are distinguishing factors of cash balance plans. Employers make annual contributions to each participant’s hypothetical account, typically based on a percentage of the employee’s pay. In addition to these contributions, the plan guarantees an annual interest credit, which is not affected by market fluctuations. This means employees can count on steady growth in their retirement savings, regardless of how the stock market performs.

Vesting schedules in cash balance plans determine when employees gain full ownership of their account balances. Many plans use a three-year cliff vesting schedule, meaning employees become fully vested after three years of service. Once vested, participants who leave the company can take their account balance with them, either as a lump sum or as an annuity, making these plans more portable than traditional pensions.

At retirement, participants in a cash balance plan can typically choose between receiving their benefit as a lump sum or as a series of monthly payments for life. The lump sum option allows retirees to roll over their balance into an IRA or another qualified retirement plan, providing flexibility in managing their retirement funds. The annuity option, on the other hand, offers a steady stream of income, similar to a traditional pension.