Phase 2 · Build & AutomateStep 14~5 min read

Fill Your Tax-Advantaged Accounts

HSA → Roth IRA → 401(k), in that order

Your foundation is secure. Now fill the three accounts the tax code rewards most — in the order that gets you the biggest break first — and automate every one of them.

Your goal Your HSA, Roth IRA, and 401(k) on automatic contributions that reach the 2026 maximums by year-end.

What & why

Three accounts, three different tax breaks.

Every dollar in these accounts grows with a tax advantage you can't get anywhere else. Fill them in order: each one is worth more than the next, and each step re-points the same automatic contributions at a bigger target.

1 · HSA

$4,400 / $8,750

Single / family. The only triple tax break: tax-free in, while growing, and out for medical costs. Requires a high-deductible health plan (HDHP).

2 · Roth IRA

$7,500

$8,600 if 50+. Taxed now, then tax-free forever. More fund choice than a 401(k), no required withdrawals, and contributions can come out anytime.

3 · 401(k) / 403(b)

$24,500

$32,500 if 50+ ($35,750 at 60–63). The biggest bucket. Pre-tax contributions cut this year's tax bill — about $5,880 at a 24% bracket.

2026 IRS limits — confirm the current year's figures each January. Your employer match was already captured in Step 9; here you go from the match to the max.

$708K

What $7,500 a year in a Roth IRA grows to over 30 years at 7% — with zero federal tax owed when you take it out.

Recommended setup

Three accounts, all on autopilot

The default setup for most people

Not eligible for one? Skip it and move to the next.

HSA

Per-paycheck contribution, invested

At a provider with investing (e.g. Fidelity HSA). Keep $500–$1,000 cash; invest the rest in an index fund.

HSA habit

Pay medical bills out of pocket

Save every receipt — you can reimburse yourself tax-free years later.

Roth IRA

~$625/month automatic transfer

At Fidelity, Vanguard, or Schwab, auto-invested in a three-fund portfolio or target-date fund.

Roth, high income

Backdoor Roth

Income over $153K single / $242K married: contribute to a Traditional IRA, then convert.

401(k)

Pre-tax, lowest-cost index fund

Pre-tax in the 22%+ brackets; Roth 401(k) if your bracket is unusually low. Fees under 0.20%.

401(k) ramp

+1–2% a month until maxed

About $2,042/month at the max. Bank every raise here first.

Do it

Six moves, in order

Confirm you're on an HDHP and open an HSA with investing.

You noted your plan type in Step 5. On a PPO? Skip the HSA this year and revisit at open enrollment.

Set the HSA contribution and invest it.

Annual max ÷ pay periods, counting any employer contribution (about $169 biweekly for single coverage). Invest everything above a small cash buffer.

Open a Roth IRA and check the income limit.

Under the limit: contribute directly. Over it: use the backdoor — and roll any old Traditional IRA balances into your 401(k) first, or the conversion gets taxed.

Automate the Roth and turn on auto-invest.

About $625 a month. New contributions often sit in cash until you pick funds — don't let them.

Raise your 401(k) contribution 1–2% today, and again every month.

Switch to the plan's cheapest index fund (look for "Index," "500," or "Total Market"). Keep raising until you're on pace for the max.

Bank every raise into the 401(k) until it's maxed.

Raise your contribution % before the new paycheck arrives — you never miss money you never had.

You're done when

Every tax-advantaged account is filling itself

Your HSA (if eligible) is on pace for the annual max, invested above a small cash buffer, and you're saving medical receipts.

Your Roth IRA (direct or backdoor) is on pace for $7,500 and auto-invested — not sitting in cash.

Your 401(k) contribution is on pace for the $24,500 max, in a low-cost index fund, with a plan to bank your next raise.

Questions

Common questions & mistakes

Why this order — HSA, then Roth, then 401(k)?

The HSA's triple tax break beats everything. The Roth IRA comes next for flexibility, fund choice, and tax-free withdrawals. The 401(k) is the biggest bucket, so it comes last and absorbs whatever's left.

I can't afford all three right now.

Go in order and climb gradually. Raise contributions 1–2% at a time and route every raise here. Most people reach the max over a year or two.

Pre-tax or Roth 401(k)?

Pay tax when your rate is lowest. In the 22–32% brackets, pre-tax usually wins. Early career, a low-income year, or the 12% bracket? Roth 401(k).

Isn't the HSA just for medical bills?

No — unlike an FSA it never expires and can be invested. Think of it as a third retirement account that also covers medical costs tax-free. After 65, non-medical withdrawals are taxed like a Traditional IRA.

My 401(k) funds are all expensive. Should I still max it?

Usually yes — the tax savings outweigh the extra fees. Pick the cheapest option, and roll it into an IRA when you leave the job.

What are the common mistakes?

Leaving HSA or IRA money uninvested in cash, contributing to an HSA without an HDHP, doing a backdoor Roth with existing Traditional IRA balances, and front-loading the 401(k) when your plan doesn't "true up" the employer match.