Global Finance · Chapter 14

Tax Strategies for Investors: Legally Minimize What You Pay

How to use tax-advantaged accounts, asset location, tax-loss harvesting, and legal structures to keep more of what you earn.

Understanding Investment Tax Rates

The US tax code treats different types of investment income very differently. Understanding these distinctions is the foundation of tax-efficient investing — the same investment can produce dramatically different after-tax returns depending on which account holds it and how long you hold it.

Ordinary Income Tax Rates (2024)

Wages, salary, interest income, short-term capital gains (assets held less than 12 months), and certain dividends are all taxed as ordinary income at progressive rates.

Tax Bracket	Single Filers	Married Filing Jointly
10%	$0 – $11,600	$0 – $23,200
12%	$11,601 – $47,150	$23,201 – $94,300
22%	$47,151 – $100,525	$94,301 – $201,050
24%	$100,526 – $191,950	$201,051 – $383,900
32%	$191,951 – $243,725	$383,901 – $487,450
35%	$243,726 – $609,350	$487,451 – $731,200
37%	Over $609,350	Over $731,200

The US uses a marginal rate system — only the income in each bracket is taxed at that rate, not all income. A single filer earning $60,000 pays 10% on the first $11,600, 12% on the next $35,550, and 22% only on the remaining $12,850 — an effective rate well below 22%.

Long-Term Capital Gains Rates (2024)

Assets held for more than 12 months qualify for preferential long-term capital gains rates — one of the most powerful tax advantages available to investors. The difference between short-term and long-term treatment can amount to 20+ percentage points of tax.

LTCG Rate	Single Filers (Taxable Income)	Married Filing Jointly
0%	Up to $47,025	Up to $94,050
15%	$47,026 – $518,900	$94,051 – $583,750
20%	Over $518,900	Over $583,750

    The Power of the 0% LTCG Rate: A married couple earning $80,000 total in wages pays 12% ordinary income tax on their top dollars. But if they also have $14,000 in long-term capital gains (keeping total income under $94,050), those gains are taxed at 0% — completely free. Strategic realization of gains in low-income years (job loss, sabbatical, early retirement) can eliminate capital gains taxes entirely.
  

Tax-Advantaged Accounts: The Most Powerful Tools

401(k) — Traditional

A 401(k) is an employer-sponsored retirement savings plan. Contributions to a traditional 401(k) reduce your taxable income in the year made (pre-tax). The money grows tax-deferred — no tax on dividends, interest, or capital gains as the portfolio grows. Withdrawals in retirement are taxed as ordinary income. The 2024 contribution limit is $23,000 for employees under 50, and $30,500 for those 50 and older (catch-up contributions).

Most employers offer matching contributions — typically 3–6% of salary. Employer matching is a 100% immediate return on investment — always contribute at least enough to capture the full match before investing anywhere else.

Roth 401(k)

The same contribution limits as traditional 401(k), but contributions are made with after-tax dollars. The trade-off: no upfront tax deduction, but qualified withdrawals in retirement are completely tax-free — principal and all investment growth. Same limits: $23,000 under 50, $30,500 at 50+.

Traditional vs. Roth: The Key Decision — If you expect to be in a higher tax bracket in retirement than today, Roth is superior (pay lower rates now, avoid higher rates later). If you expect lower rates in retirement, traditional is superior (avoid high rates now, pay lower rates later). For most young earners early in their careers — in the 12% or 22% bracket — Roth is generally advantageous.

Individual Retirement Accounts (IRAs)

IRAs are self-directed — opened at any brokerage (Fidelity, Vanguard, Schwab), not tied to an employer. The 2024 contribution limit is $7,000 ($8,000 if age 50+).

Traditional IRA: Potentially deductible if you (and your spouse) don't have a workplace retirement plan, or if income is below phase-out limits. Same tax treatment as traditional 401(k).
Roth IRA: Contributions are not deductible, but all growth and qualified withdrawals are tax-free. 2024 income limits: single filers can contribute fully up to $146,000 MAGI, phased out to $161,000; married filing jointly fully up to $230,000, phased out to $240,000. Above these limits, you cannot contribute directly.

The Backdoor Roth IRA for High Earners

High earners above the Roth IRA income limits can still access Roth benefits through the "backdoor" strategy: make a non-deductible traditional IRA contribution ($7,000), then immediately convert it to Roth. Since no deduction was taken, there is no taxable income on conversion (assuming no other traditional IRA balances). This is a completely legal strategy explicitly acknowledged by the IRS.

Health Savings Account (HSA): The Triple Tax Advantage

The HSA is arguably the most tax-efficient account in the US tax code — the only account offering three layers of tax advantage simultaneously.

    HSA Triple Tax Advantage:
    Deductible contributions: $4,150 individual / $8,300 family in 2024 — reduces taxable income dollar-for-dollar.
Tax-free growth: Invested funds grow without any tax on dividends, interest, or capital gains.
Tax-free withdrawals for medical expenses: Pay for any qualified medical expense (doctor visits, prescriptions, dental, vision, even Medicare premiums) with zero tax.

    The "stealth IRA" strategy: Pay current medical expenses out-of-pocket, keep receipts, and let the HSA grow invested. At any future point — even decades later — you can reimburse yourself for those past medical expenses tax-free. After age 65, the HSA converts to a traditional IRA equivalent (taxable withdrawals for non-medical, but no penalty). Available only with High-Deductible Health Plans (HDHP).
  

Asset Location: Which Account Holds Which Asset?

Asset location is the strategy of placing each investment in the account type that maximizes its after-tax return. The same investment produces very different results depending on whether it sits in a taxable, traditional, or Roth account.

Asset Type	Best Account	Reason
Bonds / Bond funds	Traditional 401(k) or IRA	Interest income taxed at high ordinary rates — shelter it in tax-deferred account
REITs	Traditional 401(k) or IRA	REIT dividends taxed as ordinary income — must be sheltered
High-growth stocks (no dividends)	Roth IRA	All appreciation grows and can be withdrawn tax-free — maximize Roth for highest-growth assets
Broad US / international index funds	Taxable brokerage	Low turnover means minimal capital gains distributions; qualified dividends taxed at favorable LTCG rates
I-Bonds / TIPS	Traditional IRA or taxable	Inflation adjustments taxed as ordinary income annually in taxable — sheltering preferred

Tax-Loss Harvesting

Tax-loss harvesting (TLH) is the practice of selling investments at a loss to realize a tax deduction, then immediately reinvesting in a similar (but not identical) asset to maintain market exposure.

Tax-Loss Harvesting: Worked Example

You bought $10,000 of iShares S&P 500 ETF (IVV) in January. By October, a market correction has dropped it to $8,000 — a $2,000 unrealized loss.

Action: Sell IVV, realizing the $2,000 loss. Immediately buy Vanguard S&P 500 ETF (VOO) — different fund, same exposure, no change in market position.

Tax benefit: The $2,000 loss offsets $2,000 of capital gains elsewhere in your portfolio, saving 15–20% of $2,000 = $300–$400 in taxes. If you have no gains to offset, up to $3,000 per year can reduce ordinary income, and excess losses carry forward indefinitely to future years.

The long-term cost: Your cost basis in VOO is now $8,000. When you eventually sell for $15,000, you'll owe tax on $7,000 gain instead of $5,000. TLH defers taxes, not eliminates them — but deferral has real value.

The Wash-Sale Rule

The IRS prohibits "wash sales" — selling a security at a loss and buying a "substantially identical" security within 30 days before or after the sale. If you sell IVV (iShares S&P 500 ETF) and buy SPY (SPDR S&P 500 ETF) — both tracking the exact same index — the IRS may disallow the loss. The key is buying a similar-but-not-identical substitute. Selling a total market ETF and buying an S&P 500 ETF is generally acceptable; selling one S&P 500 ETF and buying another S&P 500 ETF may not be.

Qualified vs. Ordinary Dividends

Not all dividends are taxed equally:

Qualified dividends: Paid by US corporations and certain foreign corporations on stock held for at least 61 days. Taxed at the preferential long-term capital gains rate (0%, 15%, or 20%). Most dividends from S&P 500 companies are qualified.
Ordinary dividends: Dividends from REITs, money market funds, short-term holdings, and certain foreign stocks. Taxed at ordinary income rates — potentially 37% for high earners. This is why REITs belong in tax-advantaged accounts.

Step-Up in Basis at Death

One of the most powerful estate planning provisions in the tax code: when you inherit appreciated assets, your cost basis is "stepped up" to the fair market value on the date of the decedent's death. You do not owe capital gains tax on appreciation that occurred during the deceased's lifetime.

Step-Up in Basis Example:

Your parent bought Apple stock in 1990 for $1,000. At their death in 2024, it's worth $400,000 — a $399,000 gain. If they had sold it, they'd owe $59,850 in capital gains tax (15% × $399,000).

But because they held until death, you inherit with a cost basis of $400,000. If you immediately sell at $400,000, your tax: $0. The $399,000 gain is permanently exempt from capital gains tax.

This step-up makes holding appreciated assets until death — rather than gifting them during life — a powerful generational wealth transfer strategy.

The 1031 Exchange for Real Estate

Section 1031 of the Internal Revenue Code allows real estate investors to defer capital gains taxes indefinitely by rolling proceeds from one investment property sale into another "like-kind" property. The rules:

Must identify replacement property within 45 days of the sale
Must close on replacement property within 180 days of the sale
Must reinvest all proceeds (including debt) — trading up in value defers all gain; trading down creates taxable "boot"
Requires a qualified intermediary to hold funds — you cannot touch the sale proceeds

By chaining 1031 exchanges across a lifetime, a real estate investor can build a large portfolio while deferring all capital gains. At death, heirs receive a stepped-up basis — eliminating the deferred gain permanently.

Cryptocurrency Tax Reporting

The IRS treats cryptocurrency as property. Every transaction — selling for cash, trading one crypto for another, using crypto to buy goods or services — is a taxable event. This creates significant complexity for active crypto users:

Buy 1 ETH at $1,000. Later use it to purchase an NFT when ETH is worth $3,000: taxable gain = $2,000 at the moment of the transaction
Receive staking rewards of 0.5 ETH when ETH is $2,000/ETH: ordinary income of $1,000 at receipt
Trade ETH for BTC: taxable event at both legs of the trade

Tax software designed for crypto (CoinTracker, Koinly, TaxBit) can import transaction history from exchanges and wallets and calculate gains/losses across thousands of transactions, generating Form 8949 for your tax return.

Tax Diversification: A Retirement Strategy

Having retirement assets in three different tax buckets — traditional (pre-tax), Roth (after-tax), and taxable brokerage — gives maximum flexibility in retirement to manage your tax liability year by year.

In a given retirement year, you might draw $30,000 from traditional (taxable), $20,000 from Roth (tax-free), and $10,000 from taxable brokerage at preferential LTCG rates. By controlling the mix, you can stay in the 12% marginal bracket, keep Medicare premiums low (IRMAA surcharges apply above $103,000 individual income), and make strategic Roth conversions in low-income years to reduce future required minimum distributions.

Chapter Summary

Long-term capital gains (held 12+ months) are taxed at 0%, 15%, or 20% — far below ordinary income rates of up to 37% for short-term gains; holding investments over one year is the simplest legal tax reduction strategy.
401(k) and IRA accounts shelter investment growth from annual taxation; traditional versions defer taxes to retirement, Roth versions eliminate future taxes — Roth generally favors younger, lower-bracket investors.
The HSA offers the only triple tax advantage in the US code: deductible contributions, tax-free growth, and tax-free withdrawals for medical expenses — the "stealth IRA" for healthcare costs in retirement.
Asset location — placing bonds and REITs in tax-deferred accounts, growth stocks in Roth, and index funds in taxable — can add 0.5–1% annually in after-tax returns without changing the investments themselves.
Tax-loss harvesting realizes investment losses to offset gains, subject to the wash-sale rule (cannot repurchase substantially identical security within 30 days); robo-advisors automate this process continuously.
Step-up in basis at death permanently eliminates capital gains taxes on lifetime appreciation of inherited assets — a powerful argument for holding appreciated assets rather than gifting them during life.
Tax diversification (traditional + Roth + taxable accounts) in retirement allows income management to minimize Medicare surcharges, stay in lower brackets, and make strategic Roth conversions in low-income years.