Level III Core · Asset Allocation with Real-World Constraints

After-Tax Asset Allocation and Asset Location

Updated 8 October 2026 · Fact-checked

After-tax asset allocation sets the portfolio mix using returns after taxes, because taxes cut returns differently by asset and account. Asset location places tax-inefficient assets in tax-deferred accounts and tax-efficient assets in taxable accounts. You solve it by computing after-tax returns, comparing accounts, and matching the client's constraints.

Understand Taxes and Asset Location in Asset Allocation

Investors keep only what is left after tax. Two assets with the same pre-tax return can give very different after-tax results. Interest is often taxed at the highest ordinary rate each year. Qualified dividends and long-term capital gains may be taxed at lower rates. Gains on unsold assets are not taxed until you sell.

This changes asset allocation. Allocation decides how much to hold in each asset class. You should judge each class by its after-tax expected return and after-tax risk, not its pre-tax numbers. Taxes also share in losses in some regimes, which lowers after-tax volatility. Be careful: this works only if the investor can use the losses.

Asset location decides which account holds which asset. Accounts are usually taxable, tax-deferred (tax paid on withdrawal) or tax-exempt (no tax on growth or withdrawal). Tax rules differ by country, so the exam gives you the rates. The basic idea is to put assets whose returns are taxed heavily each year into accounts that shelter them. Keep assets with low or deferred tax in the taxable account.

Location does not change total pre-tax allocation. It changes after-tax wealth. You first choose the target allocation across all accounts combined. Then you place assets to maximise after-tax value, and you check that each account has enough room.

The exam cares about the client's situation. Tax rate, time horizon, liquidity needs, withdrawal plans and account limits all matter. A short horizon or a need for cash can make a deferred account less useful, for example when withdrawals are penalised. A recommendation must link to these facts.

Key rules to remember

After-tax return, taxed annually on income: r(after-tax) = r × (1 − t); Use when the whole return is taxed each year at rate t, such as interest in a taxable account.
Taxable account with deferred capital gains: After-tax FV = V_n − t_cg × (V_n − B), where V_n = V0 × (1 + r)^n; V_n is the pre-sale value and B is the cost basis. Tax is paid once at sale on the gain only.
Tax-deferred account after-tax value: After-tax value = V0 × (1 + r)^n × (1 − t_w); Contribution is pre-tax and growth is untaxed. Tax rate t_w applies to the full withdrawal.
Tax-exempt account after-tax value: After-tax value = V0 × (1 + r)^n; Contribution is made from after-tax money. Growth and withdrawal are untaxed.
Effective annual after-tax growth, taxed each year: FV = V0 × [1 + r × (1 − t)]^n; Taxes paid each year from the account. Income is reinvested after tax.
After-tax risk (full loss offset): σ(after-tax) = σ × (1 − t); Holds only if losses give a tax benefit at the same rate. State this assumption.

How to solve Taxes and Asset Location in Asset Allocation questions

Use this order for any after-tax or asset location question. Show each calculation so a correct number earns credit.

1Read the client facts: tax rates by income type, horizon, account types, limits and liquidity needs.
2Classify each asset's return into interest, dividends and capital gains, and note when each is taxed (annually or at sale).
3Compute after-tax returns or after-tax future values for each asset in each account, using the same horizon.
4Compare assets by after-tax return, and rank where the tax benefit of sheltering is largest per rupee or dollar.
5Fill the tax-deferred or exempt account with the assets that gain most from shelter, within its size limit. Place the rest in the taxable account.
6Check that the total allocation across all accounts still matches the target, and check liquidity and withdrawal constraints.
7Answer the command word: calculate, determine, justify or recommend. Give the number or choice first and one reason tied to the client.

Quickest way: Tax drag ranking

When to use it: Use when the question asks which asset to put in which account and the numbers are simple.

For each asset, compute annual tax drag = pre-tax return × annual tax rate on that return.
Rank assets by tax drag. The highest drag goes into the sheltered account first.
Fill the sheltered account until it is full, then use the taxable account for the rest.
Do one check calculation of final after-tax value for your chosen placement if time allows.

Common mistakes in Taxes and Asset Location in Asset Allocation

Applying one tax rate to all returns
It is faster to use a single rate.
Fix: Split the return into interest, dividends and gains. Use the rate stated for each.
Taxing capital gains every year
Students treat all returns like interest.
Fix: Unrealised gains grow untaxed. Tax the gain once at sale, on value minus cost basis.
Taxing the withdrawal of a tax-deferred account only on the gain
Confusion with taxable account gains.
Fix: In a tax-deferred account the contribution was pre-tax, so the whole withdrawal is taxed at the withdrawal rate.
Changing the overall asset allocation when only location changes
Students mix up allocation and location.
Fix: Fix the combined target mix first. Then place assets across accounts to raise after-tax wealth.
Ignoring client constraints in the recommendation
Focusing on the calculation alone.
Fix: Add a line on horizon, liquidity needs, withdrawal penalties or account limits that supports or limits your choice.
Assuming after-tax risk always falls by (1 − t)
The formula is memorised without its condition.
Fix: State that it needs full loss offset at the same rate. If losses cannot be used, risk is not reduced that way.

Worked examples

Example 1

A client has 10,00,000 of after-tax money to invest for 10 years at a 7% pre-tax return with no interim income, so no annual tax. Compare the after-tax value in (a) a taxable account with all return as capital gain taxed at 20% at sale, cost basis 10,00,000, and (b) a tax-deferred account where the contribution is made pre-tax and the withdrawal is taxed at 30%. The client's tax rate is 30%, so each rupee contributed to the deferred account saves 30% tax. This means 14,28,571 can be contributed for the same 10,00,000 of after-tax cost. Which is higher?

Show the solution

Pre-tax growth factor = 1.07^10 ≈ 1.96715.
(a) Taxable: 10,00,000 grows to 19,67,150. Gain = 19,67,150 − 10,00,000 = 9,67,150. Tax = 20% × 9,67,150 = 1,93,430. After-tax value = 19,67,150 − 1,93,430 = 17,73,720.
(b) Deferred: the contribution is pre-tax. A contribution of C saves 30% tax, so the after-tax cost is 0.70 × C. For an after-tax cost of 10,00,000, C = 10,00,000 ÷ 0.70 ≈ 14,28,571. This grows to about 14,28,571 × 1.96715 ≈ 28,10,214. After 30% withdrawal tax: 28,10,214 × 0.70 ≈ 19,67,150.
Compare: 19,67,150 is higher than 17,73,720. The contribution tax saving and the withdrawal tax rate are both 30%, so they cancel. The deferred account then gives the same result as a tax-exempt account, 10,00,000 × 1.07^10. The taxable account is lower because it pays 20% tax on the gain.

Answer: Taxable account: about 17,73,720. Tax-deferred account: about 19,67,150. The deferred account is higher on an equal after-tax cost, because growth is untaxed and the contribution tax saving and withdrawal tax rate match at 30%.

Exam tips

Write the tax rate and timing for each return type before you calculate. Most lost points come from using the wrong rate.
On a justify command, give the choice, the calculation or fact, and the client link in two sentences.
Check whether the question states a cost basis. If so, tax only the gain at sale.
If asked about risk after tax, state the loss-offset assumption in one phrase.
Showing your calculation steps is good practice. A correct number alone can earn full credit for a calculation.

Taxes and Asset Location in Asset Allocation in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Taxes and Asset Location in Asset Allocation: frequently asked questions

What is the difference between asset allocation and asset location?

Asset allocation decides how much to hold in each asset class across the whole portfolio. Asset location decides which account, taxable, deferred or exempt, holds each asset. Location changes after-tax wealth, not the overall mix.

Which assets go in a tax-deferred account?

Usually assets with heavily taxed annual returns, such as bonds and high-turnover strategies. Sheltering them avoids yearly tax on interest or gains. This depends on the tax rates given in the question.

How do I calculate after-tax return for asset allocation?

Split the return by type and tax each part at its own rate and timing. Interest taxed every year is r × (1 − t). Capital gains are taxed once at sale on the gain over cost basis.

Does asset location change the pre-tax allocation?

No. You set the target allocation across all accounts combined. Then you place assets to increase after-tax value, while keeping the total mix at target.