RMD Calculator

An RMD calculator pulls your prior year-end balance, looks up your age in the IRS Uniform Lifetime Table, and divides one by the other. That is the entire formula. The table itself is just a list of life-expectancy divisors that get smaller as you age, which is why the RMD percentage of your balance climbs every year even when the balance itself is shrinking from prior withdrawals.

The divisors that matter most: 26.5 at age 73, 25.5 at 74, 24.6 at 75, 23.7 at 76, 22.9 at 77, 22.0 at 78, 21.1 at 79, 20.2 at 80, 19.4 at 81, 18.5 at 82, 17.7 at 83, 16.8 at 84, 16.0 at 85, 14.4 at 87, 12.2 at 90, 10.5 at 92, and 8.9 at 95. At 100, you are dividing by 6.4. Drop a $500,000 balance into an RMD calculator at age 73 and you get $18,868. Same balance at 80 spits out $24,752. Same balance at 90 and the number is over $40,000, even though the account never changed in dollar terms.

The Uniform Lifetime Table is the default table for almost every account owner. Two exceptions matter. If your sole spousal beneficiary is more than 10 years younger than you, an RMD calculator should switch to the Joint Life and Last Survivor Expectancy Table, which uses larger divisors and shrinks the required distribution. A 75-year-old with a 60-year-old spouse listed as sole beneficiary can drop their divisor from 24.6 to roughly 27.4, cutting the RMD by about 10%. If you inherited the account, the Single Life Expectancy Table applies, and the SECURE Act 10-year rule layers on top for most non-spouse beneficiaries who inherited after 2019.

Here is the part most calculators get right but most clients miss: the calculation runs off the December 31 balance of the prior year, not your current balance. If the market dropped 20% between January and the day you sit down to calculate your RMD, an RMD calculator still uses the higher number from December 31. The IRS does not care that your account is worth less right now. You owe the math on what it was worth at year-end. That is why we tell clients to look hard at their portfolio in late November or early December: if you are over-weighted in something you expect to fall, sell it before year-end and you reduce the next year’s required distribution.

A surprising consequence: the year you turn 73, you can defer your first RMD all the way to April 1 of the following year. Do that and you take two RMDs in one calendar year. An RMD calculator will let you model both options, but our advice is almost always to take it in the year you turn 73. Stacking two distributions in one year usually pushes you into a higher bracket and can bump your Medicare IRMAA premiums two years later, where the surcharge can hit $3,000 or more per couple. The math almost never favors the deferral.

One scenario the RMD calculator does not handle by itself: rollovers and conversions happening during the year. If you rolled $200,000 out of a 401(k) into an IRA on July 15, the December 31 IRA balance includes that money, and the divisor is applied against the full new total. But the 401(k) RMD for that year had to come out before the rollover, because rollovers cannot include RMD amounts. Get that wrong and the rolled-over RMD portion becomes an excess IRA contribution, which carries its own 6% annual excise tax until fixed. The RMD calculator only sees year-end balances; the timing of mid-year transfers is something the client has to flag separately.

Another wrinkle: aggregated reporting on the year-end statement. Some custodians report “total IRA value” combining traditional and Roth balances. The RMD calculator only wants the traditional, SEP, and SIMPLE portion, because Roth IRAs do not have RMDs for the original owner. If you feed the calculator a combined number that includes a Roth balance, you will overstate the RMD and end up with extra taxable income you did not need to take. Always pull the individual account statements, not the household summary, when sizing the December 31 figure.

The full list of divisors is published in IRS Publication 590-B. The RMD rules and tables are summarized at IRS Retirement Topics — Required Minimum Distributions. If you want the math run alongside a real income plan, our high-net-worth advisory team works through the table, the bracket impact, and the Medicare ripple effects in one sitting.

One more thing the Uniform Lifetime Table does not tell you: nothing forces you to spend the RMD. You can take the cash and move it straight into a taxable brokerage account the same day, buy the exact same fund you sold from the IRA, and the only thing you have changed is the tax wrapper. The IRS just wants the income tax. What you do with the money after that is your call. A surprising number of retirees do not need the RMD for living expenses at all, and treating it as a forced rebalancing event rather than spending money tends to produce better long-term outcomes than treating it as income.

One feature most clients ask about after running an RMD calculator the first time: do I have to sell investments to take the distribution? No. You can take the RMD in-kind by transferring shares directly from the IRA to a taxable brokerage account at the same custodian. The fair market value on the transfer date counts as the RMD amount and as ordinary income, just like a cash distribution. The cost basis in the taxable account becomes the value on that transfer date. This is useful when you want to keep a specific position invested but get it out of the tax-deferred wrapper, especially for stocks you expect to appreciate further. An RMD calculator gives you the dollar number; the in-kind decision is operational and worth a conversation with your custodian’s retirement-distribution desk before December gets crowded.

A good RMD calculator built after 2023 should use age 73 as the trigger. SECURE Act 2.0, signed at the end of 2022, pushed the starting age from 72 to 73 effective January 1, 2023. If you turned 72 in 2022 you were already in the system on the old rules. If you turned 72 in 2023 or later, you got an extra year. That is one of the biggest planning windows the law has handed retirees in a decade, and any RMD calculator that has not been refreshed since 2022 is going to give people in their early 70s the wrong answer entirely.

The age moves again. In 2033, the starting age jumps to 75 for anyone born in 1960 or later. So if you were born between 1951 and 1959, the RMD calculator should set your first distribution year as the year you turn 73. Born in 1960 or after, the trigger is age 75. Born in 1950 or earlier, you were already taking RMDs under the prior rules and stay on the schedule you started. Three different starting ages exist at once depending on birth year, which is why automated calculators trip up unless they ask for date of birth, not just current age.

A real example. A client born in March 1953 turned 73 in 2026. Their first RMD year is 2026. They can defer that first one to April 1, 2027, but their second RMD also has to come out by December 31, 2027. We almost always tell them to just take it in 2026. A client born in 1961 will not start RMDs until 2036 because age 75 applies. That is a twelve-year window to do Roth conversions before the IRS forces money out of the traditional account. Same household, same IRA balance, but the RMD calculator returns drastically different first-year results based on which side of the 1960 line they fall on.

This is where an RMD calculator becomes a planning tool, not a compliance tool. If you have a long runway before age 73 or 75, the smartest move is often to convert chunks of the traditional IRA to a Roth IRA each year, paying tax now at known brackets to shrink the future RMD. Roth IRAs do not have RMDs for the original owner. The less in the traditional account by your starting age, the smaller the required distribution forever after. We have run scenarios where a $1.5 million traditional balance at 65 turns into $300,000 by age 73 through eight years of careful conversions, and the lifetime tax savings clear $200,000 once you factor in the lower IRMAA surcharges, the lower Social Security taxation, and the bigger inheritance the next generation receives in a tax-free Roth wrapper.

The surprise most people miss: even with age 73 as the new starting line, the IRS still uses your December 31 prior-year balance. So if you turn 73 in November 2026, your first RMD is based on December 31, 2025. The RMD calculator pulls a balance from before you were even subject to the rule. Plan for that. December 30 of the year before your first RMD is the single most important date for shaping future required distributions, and it is the one date that nobody mentions in retirement planning books.

One more thing about the SECURE 2.0 starting age: it only changed the trigger for the original account owner. Inherited IRAs follow their own clock under the SECURE Act 10-year rule for most non-spouse beneficiaries. If you inherited an IRA from your father in 2022, you are still on the 10-year rule and probably still subject to annual RMDs during those ten years if he had already started his own distributions before he passed. An RMD calculator built for original owners will not give you the right answer for an inherited account, and the IRS issued final regulations in July 2024 confirming that interpretation. Get those mixed up and you can miss inherited-account RMDs you did not know existed.

Spouse beneficiaries get more options than non-spouses. A surviving spouse can roll the inherited IRA into their own IRA and reset the clock entirely to their own age-73 starting point. That is usually the right move for a younger surviving spouse who does not need the income yet. For an older surviving spouse who is already past their own starting age, treating the inherited account as their own simply merges the balances and produces one combined RMD. The RMD calculator handles the merged case cleanly; the rollover decision itself happens outside the calculator and should be made deliberately with a tax advisor before any paperwork is signed.

A subtle planning point: the year before your first RMD year matters enormously. Many of our clients in the 70-to-72 window are still working part-time or have other income that puts them in a moderate bracket. We use the RMD calculator to model future required distributions starting at 73, then work backward to figure out how much Roth conversion or capital-gains harvesting makes sense in the prep years. Once the RMDs start, your marginal bracket usually jumps, and any conversion done after that point is happening at a higher rate. The years from 70 to 73 are usually the lowest-bracket years a retiree will see for the rest of their life. Use them.

For the full SECURE 2.0 framework, the IRS RMD page is the cleanest official summary, and Publication 590-B has the detailed examples. To map a Roth conversion strategy against your future starting age, our tax strategy consulting team builds the year-by-year plan. The other free tools in our calculators library handle the conversion side of the math, including projections of what your account will look like at 73 or 75 under different conversion schedules. If you want a full review of where you stand right now, contact us and we will run the numbers together.

Yes, but the aggregation rule is narrower than people think. An RMD calculator can total up all your traditional IRAs, SEP IRAs, and SIMPLE IRAs, run the divisor against the combined December 31 balance, and tell you the single total RMD you owe. You can then pull that full amount from any one of those IRAs, in any combination. The IRS does not care which specific IRA the money comes out of, as long as the total is met by December 31 of the distribution year.

Here is what an RMD calculator cannot do, and what trips up new retirees every year: you cannot aggregate IRAs with 401(k)s, 403(b)s, or other employer plans. Each 401(k) calculates its own RMD and the distribution has to come from that specific plan. A client with two old 401(k)s from previous jobs plus three IRAs will have three separate RMDs to manage: one for each 401(k), and one combined number for all the IRAs together. An RMD calculator should ask you to split your balances into those buckets before it does anything else, because if it just totals everything it will give you the wrong number and the wrong distribution strategy.

A real client scenario from last year. A 75-year-old retiree had $420,000 in a SEP IRA, $310,000 in a traditional rollover IRA, and $180,000 in an old 401(k) at Fidelity. Total IRA balance: $730,000. Divided by 24.6 at age 75: $29,675. That entire amount could come out of either IRA in any combination. The 401(k) balance of $180,000 divided by 24.6 gave a separate $7,317 RMD that had to come specifically from the Fidelity plan. The client thought they could pull everything from the rollover IRA and meet both. They could not. We caught it in October and took the 401(k) RMD before year-end. If we had missed it, the penalty on $7,317 would have been $1,829.

403(b) plans get their own rule. You can aggregate multiple 403(b) accounts together (treating them more like IRAs in this respect), but you still cannot mix them with 401(k)s or IRAs. Inherited IRAs get their own bucket too. If you inherited an IRA from your father and you also have your own traditional IRA, those are two separate RMD calculations on two separate accounts. No aggregation between them. Inherited IRAs from different decedents are also kept separate from each other. So if you inherited one IRA from your father and another from your aunt, that is potentially three separate RMD calculations: your own, the father’s, and the aunt’s.

Roth IRAs do not have RMDs for the original owner, so a Roth IRA does not factor into the aggregation math at all. Roth 401(k)s also no longer have lifetime RMDs starting in 2024 thanks to SECURE 2.0, which closed a strange old loophole. If you still have a Roth 401(k) sitting at an old employer, you can leave it there and it will not generate an RMD anymore. We still usually recommend rolling Roth 401(k) balances into a Roth IRA for cleaner reporting and broader investment choices, but you no longer have to do it just to avoid an RMD.

The surprising piece: nothing stops you from using one IRA to satisfy the entire household’s worth of RMDs that came from your own accounts. We had a client with five IRAs spread across Schwab, Fidelity, Vanguard, and two smaller credit union accounts. Rather than process five separate distributions, they consolidated four into one Vanguard IRA in late November, then took the combined RMD as a single transfer in December. Less paperwork, less risk of one custodian missing a deadline, one Form 1099-R at filing time instead of five. The RMD calculator told them the total. The consolidation was a separate operational decision that just made the year-end execution simpler. Smaller custodians sometimes have buggy systems that botch RMD timing; rolling them into a major custodian solves the operational problem and shrinks the chance of a missed-deadline scare.

Spousal IRAs remain entirely separate. Even if you file jointly, your RMD calculator cannot combine your IRA balances with your spouse’s IRA balances. Each owner has their own age, their own divisor, their own required total. We see couples assume household-level aggregation all the time, especially when one spouse manages all the money. A husband at 76 cannot use a withdrawal from his IRA to satisfy his wife’s RMD on her own IRA, even if their joint return shows both distributions and the dollars all flow into the same checking account. Run the RMD calculator twice, once per spouse.

One more aggregation question worth flagging: solo 401(k) plans owned by self-employed retirees. A solo 401(k) is still a 401(k) for RMD purposes. If you have a solo 401(k) plus regular IRAs, those are separate buckets and the solo 401(k) RMD has to come from that account specifically. Some solo 401(k) administrators are sloppy on RMD notifications, so do not count on getting a letter. Plug the balance into the RMD calculator yourself, treat it as its own bucket, and take the distribution from that plan on time.

Your custodian will send a Form 5498 in May confirming the December 31 balance. Hold onto that. The RMD calculator is only as good as the balance you give it, and the 5498 is the official record. Form 1099-R, which comes in January, reports the distribution side. You will need both at tax time. For a full-portfolio review and aggregation strategy, our advisory services map out which accounts to draw from in which order. Sam’s clients in the high-net-worth practice usually run this alongside Roth conversion modeling, and our helpful guides have step-by-step walkthroughs for new retirees handling their first RMD year.

One operational note while you are running the RMD calculator: it is a great time to review beneficiary designations on every account. Aggregation rules depend on the account type, but distribution rules after your death depend on who is named as beneficiary. We have seen retirees take careful RMDs for a decade only to have the inheritance side go sideways because an ex-spouse was still listed as primary beneficiary on an old rollover IRA. Pull the beneficiary form from every custodian, confirm primary and contingent beneficiaries match your current intentions, and update anything stale before year-end.

An RMD calculator shows a 25% penalty because that is the current excise tax under Internal Revenue Code Section 4974 for any amount you should have taken but did not. SECURE Act 2.0 cut the old rate in half. From 1974 through 2022, the penalty was a brutal 50% of the shortfall. Starting in 2023, it dropped to 25%. If you correct the missed distribution within two years (specifically, by filing a corrected return and taking the missed amount), the penalty drops further to 10%. So when an RMD calculator flashes that 25% number on screen, it is showing you the maximum hit, not the only possible outcome.

The math is uglier than it sounds. The penalty applies to the amount you should have taken, not the income tax on it. So if your RMD calculator says you owe an $18,000 distribution and you miss the December 31 deadline entirely, the penalty is $4,500. That is on top of the income tax you still owe once you eventually do take the money. A married couple in the 24% bracket who misses an $18,000 RMD owes $4,500 in penalty plus $4,320 in regular income tax once the money comes out. Almost half the distribution evaporates. The same client who corrects within two years pays $1,800 penalty plus the regular income tax, which is a meaningful difference but still painful.

Most missed RMDs we see in practice are not from people forgetting. They come from rollovers, account changes, divorce settlements, or someone passing away mid-year. A client whose father died in October 2024 inherited the IRA but did not realize the father’s 2024 RMD had not been taken yet. The beneficiary, not the estate, is on the hook to finish out that year’s distribution by December 31. They missed it, we caught it in February, filed Form 5329 with a Section IX waiver request, took the missed amount immediately, and the IRS granted relief. The penalty was waived entirely. The IRS is more forgiving on first-time misses than people expect, especially with a clean reasonable-cause letter attached and proof that the missed amount has already been distributed.

Form 5329 is the form for reporting and requesting waiver of the penalty. It calculates the excise tax in Part IX (for IRAs) and Part VIII (for other plans). If you want the waiver, you attach a statement explaining the reason and confirming you have taken the missed distribution. There is no fee to file, and the IRS reviews each one individually. We have a near-100% success rate getting first-time misses waived when the client takes corrective action promptly. The IRS is much less forgiving on repeat misses or on cases where the missed distribution still has not been taken by the time the waiver request is filed.

Here is the surprise that catches people off guard: the IRS does not catch most missed RMDs automatically. The 1099-R reporting tells them what you did take, but matching that against what you should have taken requires them to know your December 31 balance from the year before, which they get from the 5498 in May. The matching is slow and inconsistent. Some clients have gotten away with missed RMDs for years before a notice arrives. Do not count on it. When a notice does come, it usually arrives three or four years late with interest and penalties stacked on top, and by then the two-year corrective window for the reduced 10% rate has often closed.

What an RMD calculator should also flag is the partial-shortfall situation. If your required distribution was $25,000 and you only took $20,000 before December 31, the penalty applies to the $5,000 shortfall, not the full RMD. So $1,250 at 25%, or $500 at the corrected 10% rate. People who take “most” of their RMD often assume they are in the clear because they took something. They are not. The penalty calculation is on the difference, and even small shortfalls trigger Form 5329.

One scenario worth flagging that an RMD calculator does not surface unless you ask it to: if you took the RMD from the wrong account, you may have a problem even though the total money came out. For example, if your 401(k) RMD was $7,000 and your IRA RMD was $18,000, but you took $25,000 entirely from the IRA thinking that satisfied both, you have technically missed the 401(k) RMD entirely. The IRA distribution does not cure a 401(k) shortfall. Same dollars, wrong wrapper, full penalty exposure. The RMD calculator splits the buckets up front specifically so this does not happen.

The two-year corrective window deserves more attention than most planners give it. The clock runs from the end of the year the RMD was missed. So if you missed your 2024 RMD, you have through the end of 2026 to qualify for the reduced 10% rate by taking the missed amount and filing Form 5329 with a corrected return. After that, you are stuck with the full 25%, assuming the IRS does not grant a hardship waiver. An RMD calculator that builds the corrective tax math into its output (current penalty vs. corrected penalty vs. waiver) saves clients more money than almost any other feature.

If you are worried about a missed distribution from a prior year, do not wait. Take the corrective distribution now, file Form 5329, and attach the reasonable-cause letter. Our tax services team handles the paperwork and the IRS correspondence. For ongoing RMD management so this never happens again, the helpful guides section has retirement-distribution checklists, the tax strategy guides cover the planning side, or you can contact us directly to walk through your accounts and set up a schedule that prevents the miss from ever happening.

A Qualified Charitable Distribution is one of the cleanest tax moves available to anyone over 70½. You direct money straight from your IRA to a qualified charity, and the distribution counts toward your RMD but never shows up as taxable income on your return. The 2026 cap is $111,000 per person, indexed annually for inflation under SECURE Act 2.0. Married couples each get their own $111,000 limit, so a household can run up to $222,000 through this strategy in 2026. An RMD calculator that does not let you model a QCD against the required amount is leaving the best planning move on the table.

An RMD calculator helps you size the QCD against the required distribution. If your RMD is $35,000 and you want to give $20,000 to your church or alma mater, the calculator should show two scenarios. Scenario A: take the $35,000 as a regular distribution, pay tax on it, then write a $20,000 check to the charity. You owe income tax on $35,000 and you maybe get a charitable deduction if you itemize. Scenario B: send $20,000 directly from the IRA to the charity as a QCD, then take the remaining $15,000 as a regular distribution. You owe income tax on only $15,000. The QCD never shows up in AGI. The federal tax savings on that swap alone is roughly $4,800 for a couple in the 24% bracket.

That AGI piece is the part most retirees underestimate. Keeping AGI lower than it would otherwise be cascades into smaller Medicare IRMAA surcharges (which are based on AGI from two years prior), lower taxation of Social Security benefits under the provisional income formulas, and a better shot at qualifying for various income-tested credits and phaseouts. A $20,000 QCD vs. a $20,000 distribution-plus-deduction can swing total tax bills by $5,000 or more once IRMAA and Social Security taxation get factored in. We had a Manhattan client last year save $7,200 in IRMAA premiums alone by routing $50,000 of their RMD through QCDs to operating charities they were going to fund anyway.

Rules to know before you run the RMD calculator. The IRA owner has to be at least 70½ on the date of the distribution, not at any point during the year. The donation has to go directly from the custodian to the charity. If the money lands in your bank account first, even briefly, it is no longer a QCD. Most custodians offer two methods: a wire transfer directly to the charity, or a check made payable to the charity but mailed to you to forward. Either works. The charity has to be a qualified 501(c)(3); donor-advised funds and private foundations are not eligible, even if they pass the money through to operating charities later. The custodian will report the full distribution on Form 1099-R in box 1, and it is on you and your tax preparer to mark the QCD portion as nontaxable on Form 1040 line 4b with the notation “QCD.” There is no separate IRS form, which is why so many returns get this wrong.

The surprise nobody mentions: a QCD also bypasses the SALT cap problem entirely. If you live in New York City and itemize, you are already capped at $40,400 in state and local tax deductions, which for many households still keeps itemized deductions close to the standard deduction. A regular charitable distribution would compete with that already-tight itemized bucket. A QCD does not, because it never enters AGI in the first place, so you can still take the standard deduction and get the full charitable benefit. For a $50,000-a-year donor in a 32% federal bracket who lives in Manhattan and takes the standard deduction, the QCD route saves roughly $16,000 in federal tax annually compared to taking the distribution and writing checks while still claiming the standard deduction. That is real money for people who give consistently.

SECURE Act 2.0 also added a one-time $55,000 (indexed) option to fund a charitable gift annuity or charitable remainder trust through a QCD. That is its own planning conversation and is most useful for retirees who want some lifetime income back from the charitable gift. For straight QCDs to operating charities, the $111,000 number is the one to plan around in 2026. The cap is per person per year, not per charity, so you can split a $111,000 QCD across as many qualifying organizations as you want. A common pattern is two or three larger gifts to anchor charities plus four or five smaller gifts to community organizations, all funded out of the same IRA in December.

One detail an RMD calculator should warn you about: QCDs interact with non-deductible IRA contributions through what is called the pro-rata rule for QCDs (slightly different from the ordinary pro-rata rule on distributions). The QCD is treated as coming first from the taxable portion of the IRA, which is actually favorable. If you have basis in your IRA from old non-deductible contributions, doing QCDs preserves your basis for future taxable distributions or eventual heirs. This is the opposite of how regular distributions work, and it is one of the most underappreciated features of the QCD rules.

One more strategic note an RMD calculator helps with. If you are already over 70½ but not yet 73, you can still do QCDs even though you do not have an RMD yet. The 70½ threshold is independent of the RMD starting age. Many clients use the gap years between 70½ and 73 to start QCD habits, build relationships with charities, and shrink the traditional IRA balance ahead of when RMDs kick in. The RMD calculator does not care about these years because there is no required distribution, but the QCD itself is fully legal and shows up on the same Form 1040 line 4b with the QCD notation.

For more on the philanthropy-and-tax overlap, see our tax strategy guides or the tax strategy consulting page where we build year-by-year QCD plans alongside RMD calculator output and Roth conversion modeling. The official QCD rules are summarized at IRS Retirement Topics — Required Minimum Distributions and detailed in Publication 590-B. For a full review of your situation, submit a new client inquiry and we can walk through the QCD math, the RMD timing, and the bracket impact together.