After decades of saving into retirement accounts, many people are surprised to learn that at a certain age the government requires them to start taking money out. These mandatory withdrawals are called required minimum distributions, and missing one can be costly. This guide from The Finance Reveal explains what required minimum distributions are, part of our Retirement section. This is general education, not tax or financial advice, and the rules change over time and vary by account and country, so consult a professional about your situation.

What an RMD Is and Why It Exists

A required minimum distribution, commonly shortened to RMD, is the minimum amount you must withdraw from certain retirement accounts each year once you reach a specified age. It applies to tax-deferred accounts, the kind where you received a tax break on contributions and the money has grown without being taxed along the way, such as traditional retirement accounts and workplace plans.

The reason RMDs exist is straightforward: tax-deferred accounts let you postpone taxes, not avoid them permanently. By requiring withdrawals starting at a certain age, the government ensures that money eventually comes out and gets taxed as income. This is the flip side of the upfront tax benefit that makes these accounts attractive in the first place, a trade-off our guide to retirement accounts explained describes.

How RMDs Work

The mechanics follow a consistent pattern, even as specific ages and figures change over time. The table below summarizes the key elements.

The required amount is calculated from your account balance at the end of the previous year divided by a life expectancy factor published in official tables, which means the required percentage generally rises as you get older. Because the starting age has been changed by legislation more than once in recent years, it is important to check the current rule rather than rely on a figure you heard years ago. Notably, Roth-type accounts, where you contributed after-tax money, have historically been treated differently from tax-deferred accounts on this point, which is one reason the traditional-versus-Roth choice our guide to traditional versus Roth accounts covers matters beyond just the upfront tax break. The penalty for failing to take a required distribution has historically been steep, which is why the deadlines deserve real attention.

Planning Around Them

RMDs matter for planning because they are taxable income in the year you take them, which can push you into a higher tax bracket and affect other income-related costs in retirement. A large tax-deferred balance can therefore create a bigger tax bill later than many people anticipate, sometimes at a time when they do not actually need the money for spending.

Several strategies exist to manage this, including drawing down tax-deferred accounts earlier in retirement before distributions become mandatory, converting some money to Roth-type accounts over time, or directing distributions to charity where permitted. Each has trade-offs and tax consequences, so this is an area where professional advice genuinely pays. What matters most is simply knowing the requirement exists, tracking the current starting age, taking at least the required amount on time, and building the resulting tax bill into your broader retirement plan, as our guide to building a retirement plan encourages. Handled with awareness, RMDs are a manageable feature of retirement rather than an unwelcome surprise.

Frequently Asked Questions

What is a required minimum distribution?

A required minimum distribution, or RMD, is the minimum amount you must withdraw each year from certain tax-deferred retirement accounts once you reach a specified age set by law. It applies to accounts where you received an upfront tax break and the money grew without being taxed. The rule exists because tax-deferred accounts postpone taxes rather than eliminate them, so the government requires the money to eventually come out and be taxed as income.

At what age do RMDs start?

The starting age is set by law and has been raised more than once by recent legislation, so it is important to check the current rule rather than rely on an older figure. Because these thresholds change and can differ by account type and country, confirming the current requirement with an official source or a tax professional is the safest approach, especially as you approach the age range where distributions may become mandatory.

How is the RMD amount calculated?

The amount is generally calculated by dividing your account balance at the end of the previous year by a life expectancy factor from official published tables. Because those factors decrease as you age, the required percentage of your balance generally rises over time. The exact calculation and tables can change, and multiple accounts may each have requirements, so it is worth confirming the current method or having a professional calculate it.

What happens if you miss an RMD?

The penalty for failing to withdraw at least the required amount has historically been steep, which is why deadlines deserve real attention. Because penalty amounts and any relief provisions have changed over time, check the current rules if you think you have missed one. Acting quickly generally helps, and a tax professional can advise on correcting the shortfall and whether any reduction of the penalty may be available in your situation.

The Bottom Line

A required minimum distribution, or RMD, is the minimum amount you must withdraw each year from certain tax-deferred retirement accounts once you reach an age set by law. It applies to accounts where you got an upfront tax break and the money grew untaxed, and it exists because tax deferral postpones taxes rather than eliminating them: the government requires the money to eventually come out and be taxed as income. The amount is generally calculated by dividing your prior year-end balance by a life expectancy factor from official tables, meaning the required percentage typically rises as you age. Two points deserve particular attention. First, the starting age has been changed by legislation more than once in recent years, so you should confirm the current rule rather than rely on a figure you heard years ago. Second, the penalty for withdrawing too little has historically been steep, making deadlines worth tracking carefully. Roth-type accounts, funded with after-tax money, have historically been treated differently on this point, which is one more reason the traditional-versus-Roth decision matters. For planning, remember that distributions count as taxable income in the year taken, so a large tax-deferred balance can create a bigger tax bill than expected, sometimes when you do not need the money. Strategies like drawing down tax-deferred accounts earlier, converting gradually to Roth-type accounts, or directing distributions to charity where permitted can help, though each has trade-offs worth discussing with a professional. For related guides, see our articles on retirement accounts explained, traditional versus Roth accounts, and building a retirement plan, and explore the full Retirement section. This article is general education, not personalized tax or financial advice, and rules change over time and vary by account and country, so consult a qualified professional about your situation.