How to invest a $500,000 severance package

LARGE LUMP SUM · SEVERANCE

How to invest a $500,000 severance package

A severance check is one-time money with lifetime consequences. Half a million dollars dropped into your account creates two problems at once: tax (federal + state can wipe out a third of it) and deployment shock (lump sum or dollar-cost-average?). This guide walks you through the must-do steps — tax mitigation, cash buffer, allocation, lump-sum vs DCA — and gives you a concrete sample portfolio.

Step 1 — Get the tax piece right first

Severance is taxed as ordinary income in the US. On $500,000 you can easily face a marginal rate of 35–45 % once federal, state, and Medicare add together. Before you invest a single dollar, think about spreading the income across tax years and using deferral vehicles.

  • Negotiate the timing. A January payout vs. a December payout can shift hundreds of thousands of dollars into a year with lower base income.
  • Max out the 401(k) and HSA in the payout year — every $30,000 of pre-tax deferrals saves roughly $10,000 in tax at the top brackets.
  • Open or fund a SEP/Solo 401(k) if you go independent next — the year of severance plus 1099 income is the perfect window.
  • Talk to a CPA before you accept. A few hours of advice will routinely save 5–10× their bill at this size.

Step 2 — Set aside cash before anything goes into the market

Severance rarely shows up because everything is going great. There’s usually a stretch ahead with no paycheck. The first job is to cover 12–24 months of living expenses — only after that does anything go into stocks.

Emergency fund (3–6 months)$15,000–$30,000
Bridge runway (12–24 months)$50,000–$100,000
Tax reserve (years 1–2)$120,000–$180,000
Investable remainder (typical)≈ $200,000–$300,000

$500,000 gross does not mean $500,000 of investable capital. Realistic deployable amount is $200,000–$300,000. That is not loss — that is honest planning.

THE 60/30/10 RULE OF THUMB FOR LARGE LUMP SUMS
Allocation = 60 % global equities + 30 % bonds / cash + 10 % gold / real assets

The exact split depends on age, income certainty, and risk tolerance. A 55-year-old taking early retirement should cut equity exposure (e.g. 40/50/10). A 35-year-old with a 30-year horizon can run 75/15/10.

Step 3 — Lump sum or dollar-cost average?

The hardest psychological question. The often-cited Vanguard study shows: in roughly two thirds of historical periods, lumping it all in immediately beat dollar-cost-averaging. But severance involves loss-asymmetry — a 30 % crash six months after deployment can break you mentally.

MethodUpsideDownsideWhen it fits
Lump sum (all at once)Highest expected returnCrash risk is brutal mentally30+ year horizon, iron stomach
12-month DCASmooths the entrySlightly lower expected returnStandard route for large sums
24-month DCAMaximum protection from a top crash2 years of cash dragIf you’re nervous, or near ATH
50/50 splitHalf now, rest over 12 monthsCompromisePragmatic middle path

For the typical case (six-figure severance, no second income lined up), a 12- to 24-month DCA is the honest answer — the few percent of expected return you give up is paid back many times over in not panic-selling at the bottom.

Sample allocation for $250,000 of investable capital

Assume you are mid-40s, 15+ years to retirement, want neither to gamble nor to lose to inflation:

Building blockWeightAmountFunction
VT / VTI + VXUS (global equities)50 %$125,000Broad global, return engine
VWO (emerging markets)10 %$25,000Diversification, Asia growth
BND / AGG (US aggregate bonds)20 %$50,000Stabilizer, predictable yield
HYSA / T-bill ladder10 %$25,000Crash-buying reserve
GLD / IAU (physical gold)10 %$25,000Inflation / crisis hedge

At 5 % nominal expected return over 15 years that grows to roughly ≈ $520,000, at 7 % around ≈ $690,000. After 2 % inflation about half of the nominal gain remains in real purchasing power.

Common mistakes with severance money

DO THIS
  • Tax planning before investment. CPA hours pay for themselves
  • 12–24 months of cash before anything goes into the market
  • Spread across 2–3 brokers — Schwab, Fidelity, Vanguard
  • DCA over 12+ months instead of one-shot deployment
  • Written investment policy — allocation, dates, rebalancing rule
AVOID
  • Loading up on a “hot” single stock with half the proceeds
  • Variable annuities, structured notes, or any product the bank pushes
  • 1.0–1.5 % AUM advisor fees on what is fundamentally a 3-fund portfolio
  • Buying a real-estate flip before the cash buffer is built
  • Crypto allocation above 10 % at six-figure size

FAQ

How much tax will I actually pay on $500,000 severance?

Federal: marginal 35 % over $250k single, 37 % over $625k. Add Medicare surtax (0.9 % + 3.8 % NIIT) and state tax (0–13 %), and the all-in marginal hit reaches 45 %+ in California or NYC. Total bill on $500k stand-alone severance is typically $150,000–$220,000. Pushing the payout to a low-income year and stacking 401(k)/HSA/SEP deferrals can shave $30,000–$60,000 off.

Should I just buy a house with the severance?

Rarely the best move as a stand-alone strategy. A house concentrates 100 % of the capital into one asset class, in one location, with zero diversification. If it’s your primary residence, that’s defensible. As “investment”, $250,000–$500,000 split between a small rental and a global ETF portfolio is consistently the more robust play.

Which broker should I use for $500,000?

For US residents the standard answer is Schwab, Fidelity, or Vanguard — all three have SIPC coverage ($500k securities, $250k cash) plus excess insurance well above $1M. Splitting the assets across two of them is the simplest hedge against any operational outage. Trading apps with a single counterparty (Robinhood, Webull) are not the right vehicle for this size.

What about a Treasury-bill ladder for the cash portion?

Excellent choice for the bond/cash sleeve. Rolling 4-week, 13-week, 26-week, and 52-week T-bills creates a ladder that yields roughly the same as a money-market fund but with no credit risk. Treasury interest is also exempt from state income tax in the US — a meaningful pickup in California or New York.

Is hiring an advisor worth it at $500k?

For a vanilla three-fund portfolio: no — the typical 0.8–1.0 % AUM fee compounds to $100,000–$200,000 of foregone wealth over 20 years. Advisory fees become defensible when there is real complexity: stock-option exercise, business sale, multi-state tax planning, estate work. Even then prefer hourly fee-only CFP/CPA ($300–$500/hr) over AUM-based “wealth management”.

What if I’m close to retirement?

Use the bucket approach. Bucket 1 = 3–5 years of spending in HYSA/T-bills. Bucket 2 = 5–10 years in bond ETFs. Bucket 3 = the rest in equity ETFs. You never sell stocks during a crash — you draw from Bucket 1, wait for recovery, then refill. This structure protects against sequence-of-returns risk, which is the single biggest threat in the first 5–10 years of withdrawals.

USEFUL TOOLS ON BMI

Run the real numbers — tax, real return, DCA backtest

Before you push $250,000 into the market, it’s worth checking what’s actually left after tax and inflation, and how a 12-month DCA plan would have performed historically.

  • Tax optimizer — model brackets and deferrals on a lump-sum payout
  • Real-return calculator — what stays after inflation and capital-gains tax?
  • DCA simulator — historical lump-sum vs 12/24-month DCA backtest
  • Retirement gap calculator — does the severance fund early retirement?
⚠ Disclaimer: This is general information, not individual tax or investment advice. For a six-figure severance, working with a CPA (and ideally a fee-only fiduciary advisor) almost always pays for itself many times over. Return figures use historical averages and are not guaranteed; past performance does not predict the future.
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