Personal finance learning tool
Tax-Loss Harvesting Break-even Calculator
Compare immediate tax savings from harvesting a loss with trading cost and expected future tax recapture.
Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.
Understand Tax-Loss Harvesting Break-even
One idea, three depths
Choose how deeply to explain Tax-Loss Harvesting Break-even
Tax-Loss Harvesting Break-even: Compare immediate tax savings from harvesting a loss with trading cost and expected future tax recapture.
Age 5Explain it to a 5-year-oldStart with a picture
Imagine using Tax-Loss Harvesting Break-even to answer this question: compare immediate tax savings from harvesting a loss with trading cost and expected future tax recapture? Enter Loss available to harvest, Current applicable tax rate, Trading and spread cost, and 2 other inputs; the calculator shows Estimated net harvesting benefit. Try changing one number and watch what happens to Estimated net harvesting benefit. The answer tells you Estimated net harvesting benefit.
Age 15Explain it to a 15-year-oldConnect it to the formula
Wash-sale rules, replacement exposure and tax-lot selection must be reviewed before any transaction. The rule is Net benefit = harvested loss × current tax rate − costs − expected future recapture. Its input values are Loss available to harvest, Current applicable tax rate (%), Trading and spread cost, Expected future recapture rate (%), Expected taxable replacement gain, and the main result is Estimated net harvesting benefit. Try changing one number and watch what happens to Estimated net harvesting benefit.
CollegeExplain it at college levelState the model precisely
This calculator evaluates a personal-finance model from stated cash amounts, rates and time assumptions. The implemented relation is Net benefit = harvested loss × current tax rate − costs − expected future recapture, evaluated from Loss available to harvest, Current applicable tax rate (%), Trading and spread cost, Expected future recapture rate (%), Expected taxable replacement gain to produce Estimated net harvesting benefit. Wash-sale rules, replacement exposure and tax-lot selection must be reviewed before any transaction. The result cannot predict markets or include unentered taxes, fees, legal rules, benefits, insurance terms or personal circumstances. Verify material decisions against current documents.
What this personal finance tool does
Compare immediate tax savings from harvesting a loss with trading cost and expected future tax recapture.
Why the relationship works
Wash-sale rules, replacement exposure and tax-lot selection must be reviewed before any transaction.
The formula
Net benefit = harvested loss × current tax rate − costs − expected future recapture
Inputs and time periods
This model uses Loss available to harvest, Current applicable tax rate, Trading and spread cost, Expected future recapture rate, Expected taxable replacement gain. Keep currencies and time periods consistent, and distinguish current known amounts from assumptions about future rates.
What the result means
The primary output is Estimated net harvesting benefit; supporting outputs include Immediate estimated tax saving, Expected future tax recapture. Compare scenarios by changing one input at a time.
Limits of this compact model
This educational calculator cannot predict markets or account for every tax, fee, legal rule, benefit, insurance policy or personal circumstance. Verify material decisions with current documents and qualified advice.
Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations
Standards, reading and academic references
Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.
Principles of Finance
Read the free OpenStax finance textbookCite this book
- APA 7
- Dahlquist, J., & Knight, R. (2022). Principles of finance. OpenStax. https://openstax.org/books/principles-finance/pages/1-why-it-matters
- MLA 9
- Dahlquist, Julie, and Rainford Knight. Principles of Finance. OpenStax, 2022, https://openstax.org/books/principles-finance/pages/1-why-it-matters.
- Chicago author-date
- Dahlquist, Julie, and Rainford Knight. 2022. Principles of Finance. Houston, TX: OpenStax. https://openstax.org/books/principles-finance/pages/1-why-it-matters.
OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.
Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS
These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.
APA 7
MW SysArc. (2026, July 21). Tax-Loss Harvesting Break-even Calculator. MW SysArc Tools. https://finance.mwsysarc.com/tax-loss-harvesting-break-even
MLA 9
MW SysArc. “Tax-Loss Harvesting Break-even Calculator.” MW SysArc Tools, 21 July 2026, https://finance.mwsysarc.com/tax-loss-harvesting-break-even. Accessed 31 Aug. 2026.
Chicago 17
MW SysArc. “Tax-Loss Harvesting Break-even Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://finance.mwsysarc.com/tax-loss-harvesting-break-even.
Harvard
MW SysArc (2026) ‘Tax-Loss Harvesting Break-even Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://finance.mwsysarc.com/tax-loss-harvesting-break-even (Accessed: 31 August 2026).
BibTeX and RIS records
BibTeX
@misc{mwsysarc_tax_loss_harvesting_break_even_2026,
author = {{MW SysArc}},
title = {Tax-Loss Harvesting Break-even Calculator},
howpublished = {MW SysArc Tools},
year = {2026},
url = {https://finance.mwsysarc.com/tax-loss-harvesting-break-even},
note = {Published July 21, 2026; accessed August 31, 2026}
}RIS
TY - ELEC
AU - MW SysArc
TI - Tax-Loss Harvesting Break-even Calculator
T2 - MW SysArc Tools
PY - 2026
DA - 2026-07-21
Y2 - 2026-08-31
UR - https://finance.mwsysarc.com/tax-loss-harvesting-break-even
N1 - Published July 21, 2026
ER -Clear answers
Frequently asked questions
What does the Tax-Loss Harvesting Break-even do?
Compare immediate tax savings from harvesting a loss with trading cost and expected future tax recapture.
How does the Tax-Loss Harvesting Break-even work?
The calculator applies Net benefit = harvested loss × current tax rate − costs − expected future recapture. Wash-sale rules, replacement exposure and tax-lot selection must be reviewed before any transaction.
What can I learn from the Tax-Loss Harvesting Break-even?
You will connect Loss available to harvest, Current applicable tax rate, Trading and spread cost, Expected future recapture rate, Expected taxable replacement gain to Estimated net harvesting benefit, then test how changing one assumption affects the financial decision.
Does MW SysArc receive or store what I enter?
No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.
How should I use the result?
Use the result as a planning reference, and review how income, expenses, irregular payments, rates and time periods were classified before making decisions.
Last reviewed . Calculations tested .