Continuous Tax-Loss Harvesting Cycle
Harvest losses year-round while preserving portfolio exposure
- Difficulty
- Moderate
- Time to result
- ~ongoing to results
- Steps
- 5
- Confidence
- 96%
Continuous tax-loss harvesting replaces the traditional December-only review with recurring monitoring of taxable holdings. When volatility pushes a position below its tax basis, the investor first determines whether realizing the loss would offset gains or create a useful carryforward. The position is then sold and replaced with a similar—but not substantially identical—security so the portfolio retains its intended economic exposure without triggering the wash-sale rule. The cycle repeats as opportunities arise rather than on an arbitrary annual date. State rules remain an explicit decision input: where losses cannot be carried forward, an investor may instead harvest gains before year-end to consume losses while they still have state-level value.
Origin
Extracted from Masters in Business
Core principles
- 01Harvest opportunities throughout the year
- 02Preserve the portfolio's intended exposure
- 03Use losses against realized gains when valuable
- 04Avoid wash-sale violations
- 05Adapt the strategy to state tax rules
How to run it
- 1
Monitor taxable lots
Review individual tax lots throughout the year and flag holdings whose current value has fallen below their cost basis.
Pro tip Lot-level monitoring can reveal opportunities hidden by an overall position gain.
Watch out Do not limit the review to December.
- 2
Confirm the tax use
Estimate whether the realized loss will offset current gains, ordinary income within applicable limits, or future gains through a carryforward.
Pro tip Include both federal and state treatment in the estimate.
Watch out A loss may have reduced value in a jurisdiction that restricts carryforwards.
- 3
Choose a replacement
Identify a similar investment that maintains the portfolio's desired exposure without being substantially identical to the security sold.
Pro tip Match the replacement by economic role, sector, or broad exposure rather than ticker resemblance alone.
Watch out Check wash-sale exposure before executing the trade.
- 4
Execute and document
Sell the losing tax lot, purchase the replacement, and record the loss, replacement rationale, and relevant dates.
Pro tip Coordinate activity across accounts controlled by the investor or household.
Watch out An automatic purchase or dividend reinvestment can create an unintended wash sale.
- 5
Reassess before year-end
Compare realized losses with gains and state-specific expiration rules, then decide whether additional loss or gain harvesting is appropriate.
Pro tip In a state without loss carryforwards, consider realizing gains that can absorb otherwise stranded losses.
Watch out Tax optimization should not force an unsuitable investment sale.
In the wild
A diversified taxable portfolio contains an individual stock trading below its cost basis. The investor sells the position, records the capital loss, and buys a different company with similar portfolio characteristics. The replacement maintains broad exposure while the realized loss offsets gains elsewhere.
→ The portfolio remains invested while acquiring a usable tax loss.
A New Jersey investor reaches December with losses realized during the first eleven months. Because the state does not permit those losses to carry forward, the adviser identifies appreciated positions whose gains can be recognized without materially damaging the portfolio.
→ Current-year gains consume losses that might otherwise lose their state tax value.
Common mistakes
Waiting until December
A year-end-only review misses losses created by volatility earlier in the year.
Buying an identical replacement
A substantially identical purchase can trigger wash-sale treatment and defer the intended loss.
Ignoring state treatment
Federal carryforward assumptions may not apply at the state level, materially changing the optimal trade.
Is it for you?
Best for
It is best for investors with diversified taxable portfolios, realized gains, and enough trading flexibility to use replacement securities.
Not ideal for
It is not ideal when transaction costs, wash-sale exposure, state rules, or the investment case outweigh the expected tax benefit.
From the transcript
“This should happen with regularity.”
“There's nothing saying we can only book losses in December.”
“We're going to realize capital gains so we can use them at the state level this year.”
From the episode
At The Money: Tax Day Special