After-Tax Engineering

Framework · All Stages

After-Tax Investment Decision Engine

Rate any investment, strategy, or tax position on 7 factors. Get a weighted score and recommendation. Use this before committing capital to anything — real estate, private funds, concentrated stock, complex tax strategies.

This is a qualitative framework, not a precise calculator. Scores reflect your subjective assessment. The value is in forcing structured thinking — not in the number itself.
Weight: 3x

Pre-Tax Economics

Does this investment make sense before taxes?

Would you do this if there were no tax benefit? If the answer is no, taxes are carrying a bad investment.

Poor / High risk Excellent / Low risk
Weight: 3x

After-Tax Return

What is the actual after-tax return vs the index benchmark?

After-tax return must beat VTI/VXUS after fees, drag, and exit taxes — at the same risk level.

Poor / High risk Excellent / Low risk
Weight: 2x

Liquidity

Can you exit? How long is capital locked? What is the cost?

Capital locked for 7 years has a real opportunity cost. Demand a meaningful illiquidity premium.

Poor / High risk Excellent / Low risk
Weight: 2x

Complexity Cost

What is the admin, accounting, and time burden?

K-1s, 1031 timelines, STR logs, entity maintenance — these are real costs that reduce after-tax return.

Poor / High risk Excellent / Low risk
Weight: 2x

Audit / Legal Risk

Is this position defensible? What is the compliance exposure?

An aggressive deduction that gets challenged in audit often costs more than it saved.

Poor / High risk Excellent / Low risk
Weight: 1x

Concentration Risk

Does this create single-asset, single-market, or single-employer exposure?

Concentrated positions require higher expected returns to justify the undiversified risk.

Poor / High risk Excellent / Low risk
Weight: 3x

Opportunity Cost

Is this better than low-cost index investing in a tax-advantaged account?

Every dollar here is a dollar not in a Roth IRA or 401k. That benchmark is hard to beat.

Poor / High risk Excellent / Low risk

How the scoring works

Scoring scale

1 = Poor / very risky

2 = Below average

3 = Acceptable / neutral

4 = Good

5 = Excellent / very low risk

Weighted factors

Pre-tax economics: 3x (if bad, nothing else matters)

After-tax return: 3x (the whole point)

Opportunity cost: 3x (the benchmark is always VTI)

Liquidity, complexity, audit: 2x

Concentration: 1x

Recommendation thresholds

Proceed

Score ≥ 80

Investigate

Score 60–79

Pass

Score < 60