Two numbers, 4 and 6 percent, set the pay in the guardrails withdrawal strategy for retirement that Tolleson Wealth Management uses in its illustration: below 4 percent, the paycheck rises 10 percent; above 6 percent, it trims 10 percent. It fits a retiree drawing from roughly $1M who can live with a cut of about $400 monthly in a bad year. In exchange, the starting paycheck is higher than a fixed 4 percent would pay. Picture a couple looking at the first January without a full-time salary: bills still arrive, but their investment account now has to send the deposit. Questions Tolleson Wealth Management hears in first meetings often come down to one concern: how can a paycheck rise without ignoring a rough market?
“A $400 monthly trim is easier to absorb when you decide in advance where it would come from. We look first at fixed bills, because a guardrail cannot pay a mortgage that has no room to move.”
Maya Chen, Senior Financial Planner at Tolleson Wealth Management
“Use one year-end balance and one annual calculation. Changing the formula every time the market moves turns a spending rule into a reaction.”
Robert Ellis, CPA, Tax Director at Tolleson Wealth Management
Should we take a fixed $36K, a flat 5 percent or a guardrails paycheck?
A fixed 4 percent draw from Darnell’s $900K 401(k) pays $36K annually, or $3,000 monthly, plus inflation. A flat 5 percent pays $45K initially but falls to $39K when the balance drops to $780K, a 13 percent cut in one year. Tolleson Wealth Management favors guardrails: begin at $50K, then make a 10 percent change only when the withdrawal rate leaves the 4 to 6 percent band.
The real choice is starting pay versus the largest monthly swing you can carry. Fixed dollars have no annual pay swing but begin lowest; a flat percentage moves every year; guardrails usually move less often, in steps of roughly $400 monthly at this account size. A fixed number can leave spending unnecessarily low during strong decades or keep full pay flowing while the market is down.
Guardrails at 4 and 6 percent over Darnell’s first five years
For illustration, Darnell and Fatima are 62 and 60. Darnell left an aerospace engineering job early, Fatima still works part time as a bookkeeper, and they chose the pension’s monthly check over its $400K lump sum. Their 401(k) supplies $50K annually: $50K ÷ $900K = 5.6 percent. Fatima’s pay covers part of the bills while they bridge to Social Security at 67 or 70.
Their guardrail check happens at the January annual meeting, using the December 31 balance. The instruction is simple: trim 10 percent when the rate exceeds 6 percent, raise 10 percent when it falls below 4 percent, and hold the draw between those lines. Inflation raises are left out here so you can see the divisions without extra math.
Age 63 is the row where the answer flips. The $780K balance makes the existing $50K draw a 6.4 percent withdrawal rate, so pay drops to $45K. At 64 and 65, the rate returns inside the band and the couple holds the lower amount. At 66, the larger balance pushes the rate below 4 percent, so pay rises.
Skipping the trim at 63 because the pension and Fatima’s paycheck cover the bills costs nothing that January. But drawing $50K rather than $45K takes another $5K annually from the 401(k), or $100K over 20 years before growth, and begins the next downturn above the 6 percent line. That is a choice with a long tail.
Before Tolleson Wealth Management changes a draw, it recomputes the rate using the January balance and resets tax withholding for the new amount. The monthly deposit changes then, not as an unpleasant surprise in April. This market path is invented, not a forecast; a real 401(k) can finish a year worth less than the money put into it.
| Darnell's age | What happens | What to do |
|---|---|---|
| 62 | $900K, $50K draw, 5.6% | Hold at $50K |
| 63 | Balance $780K, rate 6.4% | Trim 10% to $45K |
| 64 | Balance $860K, rate 5.2% | Hold at $45K |
| 65 | Balance $1M, rate 4.5% | Hold at $45K |
| 66 | Balance $1.15M, rate 3.9% | Raise 10% to $49,500 |
Can my 401(k) plan pay a guardrails draw that changes each year?
A 401(k) can support a changing draw only if its rules allow partial withdrawals and timely installment changes; ask before you rely on the account for monthly pay. Ask the plan and pension administrator whether withdrawals can occur monthly, whether each withdrawal has a charge, how quickly money reaches your bank, and whether the pension check receives a cost-of-living raise.
Most single cash withdrawals from a 401(k) carry mandatory 20 percent federal withholding. “Installments only, changed once a year” or “full balance only” should concern you, because a trim may wait months. A 401(k) rollover to an IRA may then belong in the discussion, and that choice has its own page.
Six steps between today’s balance and the first January check
Start with last year’s bank statements this month. First, list fixed monthly bills, including housing, insurance, and debt payments. Second, subtract dependable income such as a pension check and part-time pay. Third, choose the starting draw and divide it by the current account balance. If $50K comes from $900K, the result is 5.6 percent.
Fourth, write the 4 percent and 6 percent band and the 10 percent step into your playbook. Fifth, ask the plan or custodian how it accepts amount changes and withholding instructions. Sixth, recheck once each January using the December 31 balance. The quick test is this: planned annual draw ÷ balance. Above 6 percent, cut the draw 10 percent; below 4 percent, increase it 10 percent; anywhere between, leave the paycheck alone.
Older retirement playbooks may carry assumptions that no longer fit. Required minimum distributions once began at 70½, then 72; they now start at 73, or 75 for people born in 1960 or later. Darnell falls into the age-75 group. Someone still 10 to 15 years from retirement has time to use compounding and catch-up room: the IRS limit for 2026 permits an $8,000 catch-up contribution at 50+, and $11,250 at ages 60 through 63 in a 401(k). Fatima, at 60, could use the higher amount if her employer’s plan offers it.
Leave some space inside the band. Starting at 5.6 percent, rather than 6 percent, gives a modest market drop room before a cut is triggered. Treat a one-time cost, such as a $20K medical bill, as a separate withdrawal rather than silently turning it into permanent base pay. Tax law, health costs, and distribution rules can also change, so Tolleson Wealth Management revisits the figures that make the paycheck workable.
Fixed 4 percent can fit someone whose fixed bills consume nearly the whole draw. A flat percentage can fit a large balance with modest spending. Guardrails fit a married couple with another income source that can absorb a $400 monthly trim. They are a poor fit when fixed bills leave no room for a 10 percent cut, or when the starting rate already exceeds 6 percent and repeated trims are likely. Someone living alone on a more modest account, or an early retiree at 62 with more than 30 years ahead, should begin nearer 5 percent than 6 percent.
The yearly division you can run alone, and where Tolleson Wealth Management adds a check
You can run the yearly guardrail test yourself: divide this year's planned draw by the December 31 balance. A conversation with Tolleson Wealth Management is worth having when a pension choice, account order, withholding, or required distributions at 75 could change that division. The request form is the way in. Tolleson Wealth Management puts its compensation on paper for you to review before a single dollar is moved.
Questions about a guardrails withdrawal strategy for retirement
My part-time employer offers a 401(k) with a match; should I keep contributing while we draw from my husband’s account?
Does a guardrails paycheck still work if we take the pension as a $400K lump sum instead of a monthly check?
When in the year should I run the guardrail check, and how soon should the new amount start?
Can we pick guardrails other than 4 and 6 percent?
Do the guardrails still matter once Social Security starts at 67?
Where the rules come from
This is general information, not personalized investment, tax, or legal advice. Investing involves risk, including possible loss of principal. Talk to a financial professional before making decisions about your money.