ProMoney · Simulator
Tax-Loss Harvesting Simulator
Turn losses into tax savings that compound.
Assumptions
Tax saved now
$9,000
Gains offset
$30,000
Savings grown
$17,704
| Line | Amount |
|---|---|
| Gains offset by losses | $30,000 |
| Tax saved | $9,000 |
| Value if reinvested | $17,704 |
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Built by The Crimson Bench · Educational model, not financial advice
About the Tax-Loss Harvesting Simulator
Model harvesting losses to offset gains and see the tax saved — and what that saving grows to if reinvested. Educational only.
It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.
How the Tax-Loss Harvesting Simulator Works
The model takes 5 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.
The Inputs
| Assumption | Example value |
|---|---|
| Realized gains | $50,000 |
| Harvested losses | $30,000 |
| Tax rate | 30% |
| Reinvestment return | 7% |
| Years | 10 |
Worked Example
Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.
Tax saved now
$9,000
Gains offset
$30,000
Savings grown
$17,704
| Line | Amount |
|---|---|
| Gains offset by losses | $30,000 |
| Tax saved | $9,000 |
| Value if reinvested | $17,704 |
The Operator's Read
Harvesting losses to offset gains defers tax, and the deferred dollars keep compounding for you — a real edge over time. Mind the wash-sale rule (don't rebuy the same security within 30 days). Educational only, not tax advice.
Assumptions & Limitations
- •The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
- •Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
- •It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
- •This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.
Frequently Asked Questions
What does the Tax-Loss Harvesting Simulator calculate?
Model harvesting losses to offset gains and see the tax saved — and what that saving grows to if reinvested. Educational only. It takes 5 assumptions — Realized gains, Harvested losses, Tax rate, Reinvestment return, Years — and returns Tax saved now, Gains offset, Savings grown, along with a full projection table you can export.
How do I use the Tax-Loss Harvesting Simulator?
Enter your own figures in the input fields above — Realized gains, Harvested losses, Tax rate, and the rest. The model recalculates instantly and shows the resulting Tax saved now and full breakdown. No sign-up needed to run it.
Is the Tax-Loss Harvesting Simulator free?
Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.
What's the difference between this and a free calculator?
A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.
Who built the Tax-Loss Harvesting Simulator?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.
Is this financial advice?
No. The Tax-Loss Harvesting Simulator is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.
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The Crimson Bench · Est. 2002 · Founded in New York City
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