Independent guide for tax year 2026

The right order for your retirement dollars.

Most calculators hedge. This one commits. Get the employer match, max the Roth IRA, then back to the 401k. Below is the math, the 2026 limits, and a calculator that models all three.

Contribution waterfall
The optimal pour, top down
  1. 1
    Match
    Employer cap
    Often 3 to 6 percent of salary, free money
  2. 2
    Roth IRA
    $7,500
    Full 2026 personal limit, tax free growth
  3. 3
    401k max
    $24,500
    Back to the 401k toward the employee cap
Step 4 if you qualify: HSA at $4,300 individual or $8,550 family. Step 5: taxable brokerage.
Retirement Runway
Key ages from career start to RMDs
Tax Year 2026
Career start
22
50
Catch up unlocks
Rule of 55 (401k)
55
59.5
59.5 penalty free
Super catch up (60 to 63)
60
65
Common retire age
401k RMDs begin
73
At a glance

401k and Roth IRA, side by side

The eight differences that change the answer for almost everyone.

Feature401kRoth IRAEdge
2026 contribution limit$24,500 employee$7,500401k
Catch up (50 plus)$8,000 (total $32,500)$1,100 (total $8,600)401k
Tax on contributionsPre tax (deductible)After taxTied
Tax on qualified withdrawalsOrdinary incomeTax freeRoth
Employer matchCommonNever401k
Income limitsNone$153k to $168k single401k
Required minimum distributionsYes, age 73None for ownerRoth
Withdraw contributions earlyPenalty before 59.5Any time, penalty freeRoth
Run the numbers

Project your three scenarios

Adjust your inputs. The optimal scenario captures every dollar of employer match plus a fully funded Roth IRA.

Retirement Runway Calculator

Project your retirement balance

Quick scenarios
Annual employer match at current inputs
$2,250 free per year
Projected balance at age 65
A401k only, max contributions
Gross balance
$4,273,288
After tax retirement
$3,333,164
Pre tax growth, taxed on withdrawal
BRoth IRA only, no match
Gross balance
$1,138,928
After tax retirement
$1,138,928
Tax free growth, no employer match
CMatch plus max Roth IRA (recommended)
Gross balance
$2,392,276
After tax retirement
$2,116,539
Captures the match, adds tax free Roth
Match captured over career (Scenario C)
$417,783

Employer dollars compounded at 7%. Skip the match and this is the number you leave behind. Output uses 2026 IRS limits, including age based catch ups (50 plus) and the 60 to 63 super catch up.

Calculator uses 2026 IRS limits. Returns and tax rates are illustrative, not guaranteed. Real outcomes depend on plan fees, sequence of returns, and personal circumstances.
The math

Why this order works

Three reasons the match plus Roth combination beats everything else.

01

The match is a guaranteed 50 to 100 percent return

A 50 percent match means every dollar you put in becomes $1.50 instantly. No public market consistently delivers that. Skip it and you are turning down compensation.

02

Roth IRA growth is permanently tax free

After tax contributions today, tax free growth and qualified withdrawals later. No RMDs in your lifetime. You also keep access to contributions in an emergency.

03

The 401k catches what is left

Once the match is captured and the Roth IRA is full, additional 401k contributions reduce taxable income today and shelter growth from current taxes.

Common questions

What people ask first

Should I contribute to my 401k or Roth IRA first?+

401k up to the employer match first, every time. After the full match, max the Roth IRA at $7,500 (or $8,600 at 50 plus). Then back to the 401k toward the $24,500 employee cap.

What is the 401k contribution limit for 2026?+

$24,500 base. Add an $8,000 catch up at age 50 for $32,500. Ages 60 to 63 get a SECURE 2.0 super catch up of $11,250 for a total of $35,750.

Can I contribute to both a 401k and a Roth IRA?+

Yes. They are independent accounts with independent limits. The only ceiling for the Roth IRA is the income phaseout: $153,000 to $168,000 single and $242,000 to $252,000 married filing jointly in 2026.

What if I earn too much for a Roth IRA?+

Use the backdoor Roth IRA: contribute to a non deductible Traditional IRA, then convert to a Roth. Watch the pro rata rule if you have other pre tax IRA balances.