MethodologyComparisonsHow It Works
Retirement Engineering

You've Spent 30 Years Earning It.
Do You Have a Plan to Keep It?

Tax-advantaged drawdown sequences, Social Security timing models, and Roth conversion ladders — engineered to turn thirty years of accumulation into fifty years of income.

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Serving dual-income couples within 12 years of retirement

Executive Summary

The Numbers Every Pre-Retiree Should Know

$1.1M

Average Retirement Shortfall

Median projected gap between savings and 30-year income need for households earning $150K+

* Employee Benefit Research Institute, 2024 Retirement Confidence Survey

49%

Retirees Who Outlive Savings

Nearly half of American retirees exhaust investable assets before age 85 under unoptimized withdrawal plans

* Society of Actuaries, Retirement Risk Survey 2024

2.3%

Annual Tax Drag on Unoptimized Withdrawals

Average additional annual tax burden from suboptimal account sequencing vs. a coordinated drawdown strategy

* Journal of Financial Planning, Withdrawal Sequencing Study 2023

Where do your numbers land?

A five-minute assessment produces a personalized Retirement Readiness Score — with a one-page PDF summary showing exactly where your plan holds and where it doesn't.

Comparative Analysis

Retirement Planning Is an Engineering Problem.
These tables show the difference.

Table 1 of 3

Roth Conversion Timing

Tax treatment of $1,200,000 Traditional IRA over 20-year drawdown

Optimal path highlighted
MetricNo ConversionPartial Conversion (Ages 60–64)↑ RECOMMENDEDFull Ladder (Vest Method)
Starting Balance$1,200,000$1,200,000$1,200,000
Effective Tax Rate (avg)28.4%22.1%17.6%
RMD Burden at Age 73$68,400 / yr$41,200 / yr$18,700 / yr
Medicare IRMAA Surcharge$4,012 / yr$2,108 / yr$0 / yr
Tax-Free Balance at 80$0$310,000$740,000
30-Year Net Income$1,847,000$2,104,000$2,389,000
Lifetime Tax Savings+$257,000+$542,000

Assumes 6.2% avg annual return, 2026 tax brackets, married filing jointly, standard deduction. Projections are illustrative.

A coordinated Roth conversion ladder, executed in the five years before retirement, can permanently reduce the tax surface of a $1M+ IRA by 38–47% — without changing a single investment.

Table 2 of 3

Social Security Claiming Strategy

Break-even and lifetime benefit analysis for dual-income household

Optimal path highlighted
ScenarioBoth Claim at 62Primary at 67 Spouse at 62↑ RECOMMENDEDOptimized Sequence (Vest Method)
Monthly Benefit (combined)$4,820$5,910$7,340
Annual Benefit$57,840$70,920$88,080
Break-Even AgeN/A76.278.4
Survivor Benefit (max)$2,410 / mo$3,120 / mo$4,650 / mo
Inflation Adjustment (COLA)On lower baseOn partial baseOn maximum base
Lifetime Total (to age 90)$1,619,520$1,985,760$2,466,240
Difference vs. Early Claim+$366,240+$846,720

Based on 2026 Social Security benefit tables, 2.6% avg COLA, household PIA of $3,200/$1,900. Illustrative only.

For a dual-income household, the difference between an uncoordinated Social Security claim and an optimized sequence is often $600,000–$900,000 in lifetime benefits. The math is not subtle.

Table 3 of 3

Withdrawal Strategy Comparison

Portfolio longevity across three drawdown methods — $1.8M starting balance, $9,000/mo income need

Optimal path highlighted
MetricFixed 4% RuleBucket Strategy↑ RECOMMENDEDSequenced Drawdown (Vest Method)
Year 1 Withdrawal$72,000$72,000$68,400
Tax Efficiency (yr 1)LowModerateHigh
Sequence-of-Returns ProtectionNonePartialFull
Account Depletion Risk (30 yr)34%22%8%
Median Balance at Year 25$610,000$890,000$1,240,000
Adjusts for Market ConditionsNoPartialYes — quarterly
Portfolio Longevity (median)27.4 years31.2 years38.7 years

Monte Carlo simulation, 10,000 scenarios, 60/40 equity/bond allocation, 2.8% avg inflation. Results are probabilistic, not guaranteed.

Your Numbers

See how your 401(k), rental income, and pension stack up.

The five-step assessment takes under six minutes and returns a scored breakdown of your current trajectory.

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The Methodology

Four Engineering Disciplines. One Coordinated Blueprint.

Most retirement plans optimize one variable at a time. A Vest blueprint coordinates all four simultaneously — because the tax system, the Social Security formula, and market volatility interact. Treating them in isolation leaves real money on the table.

For clients 5–12 years from retirement

The window between now and retirement is when engineering decisions have the highest leverage. Decisions made today about Roth conversions and Social Security coordination compound for decades.

Download the Full Methodology (PDF, 14 pages)
01

Account Sequencing

Optimal order of withdrawals across taxable, tax-deferred, and tax-free accounts — modeled to your specific bracket trajectory.

02

Roth Conversion Ladders

Multi-year conversion schedules that fill lower brackets before RMDs force higher-bracket distributions.

03

Social Security Timing

Claiming strategy coordinated with portfolio withdrawals to maximize survivor benefits and lifetime inflation-adjusted income.

04

Stress-Tested Scenarios

Each blueprint is tested against 10,000 Monte Carlo scenarios including sequence-of-returns risk, inflation spikes, and longevity tail risk.