Don’t Miss These Critical Deadlines for Tax-Loss Harvesting
Let’s face it – nobody likes losing money on investments. But if you’ve got some losers in your portfolio, there’s a silver lining: tax-loss selling. This strategy can help soften the blow by reducing your tax bill, but only if you beat the deadline!
I’ve been tracking these deadlines for years, and they’re coming up fast. If you’re wondering “what is the last day I can sell stock for tax loss?” – you’re in the right place. I’ll break down everything you need to know about these crucial end-of-year dates that could save you serious money.
What Exactly is Tax-Loss Selling?
Before diving into the deadlines, let’s make sure we’re on the same page about what tax-loss selling (also called tax-loss harvesting) actually is
Tax-loss selling is basically selling investments that have dropped in value to create capital losses. These losses can then offset capital gains you’ve made on other investments, potentially reducing your overall tax bill.
For example
- If you bought Stock A for $10,000 and it’s now worth $7,000
- You sell it for a $3,000 loss
- That $3,000 loss can offset gains from other investments
- Result: Lower taxable income, smaller tax bill
It’s like finding a small treasure in your investment trash! But timing is everything and that’s why knowing the deadlines is crucial.
The Critical 2024 Tax-Loss Selling Deadlines You Can’t Miss
The deadline for tax-loss selling depends on where you live. Here are the key dates for 2024:
For Canadian Investors
Last day to sell: December 30, 2024
This date is actually different from previous years! Canada switched to a T+1 settlement cycle (one business day following the trade date) on May 27, 2024. Previously, Canadian investors might have expected December 27 to be the deadline, but with the new settlement rules, you have until December 30.
Any transactions after this date will be settled in 2025, making them applicable to next year’s tax return.
For U.S. Investors
Last day to sell: December 31, 2024
American investors have until the last day of the calendar year to execute their tax-loss sales. The IRS makes it pretty clear-cut – transactions must be completed by December 31 to count for the 2024 tax year.
For Australian Investors
Last day to sell: June 30, 2025
If you’re in Australia, you’ve got more time! The Australian financial year runs differently, giving investors until June 30, 2025 to make tax-loss sales for the 2024/2025 financial year.
Important Rules You Need to Know
Tax-loss selling isn’t quite as simple as just dumping your losers. There are some rules you gotta follow:
The Wash Sale Rule (U.S. Investors)
If you’re thinking of selling a stock at a loss and then immediately buying it back to maintain your position while claiming the tax loss… think again! The IRS calls this a “wash sale” and prohibits it.
To avoid having your tax loss disallowed:
- Wait at least 30 days before repurchasing the same or “substantially identical” securities
- Make sure you’ve owned the shares for more than 30 days before selling
- Don’t purchase the same security in a different account within the 30-day period
The IRS is pretty serious about this rule, so don’t try to get clever with it!
Canadian Superficial Loss Rule
Canadian investors face similar restrictions through what’s called the “superficial loss rule.” The basic principle is the same – you can’t claim a tax loss if you or an affiliated person buys the same security within 30 days before or after the sale.
Best Timing for Tax-Loss Selling
While the final deadline is important, waiting until the last minute isn’t always the best strategy. Here’s why:
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Mid-November to mid-December is prime time: According to research from Canaccord Genuity, S&P/TSX Composite Index stocks that are down more than 15% year-to-date typically underperform the index by nearly 4% during this period due to tax-loss selling pressure.
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Liquidity dries up: Steve DiGregorio, portfolio manager at Canoe Financial, recommends acting “swiftly and aggressively” as liquidity tends to diminish closer to year-end.
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Second and third weeks of December: These are often considered the ideal window for tax-loss selling, well ahead of the “Santa Claus rally” that typically happens in the last week of December.
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Avoid the rush: When everyone sells the same stocks at the same time for tax purposes, it can drive prices down further. Getting ahead of the crowd might result in better execution prices.
The Flip Side: Tax-Loss Buying Opportunities
Now here’s something interesting – while everyone else is selling their losers, you might want to consider buying! This counter-strategy is called “tax-loss buying.”
From mid-December to mid-January, stocks that were hammered by tax-loss selling often bounce back significantly. According to Canaccord Genuity’s research, stocks that underperformed due to tax-loss selling tend to outperform the index by 3.6% from mid-December to mid-January.
This rebound effect happens because:
- The artificial selling pressure disappears after the tax deadline
- Bargain hunters jump in to buy oversold stocks
- Some original sellers repurchase positions after the 30-day wash sale period
- January generally sees new money flowing into the markets
So while you’re cleaning house in your own portfolio, keep an eye out for quality stocks that others might be dumping purely for tax reasons!
Practical Example of Tax-Loss Selling
Let me walk through a simple example to show how this works in practice:
John’s Investment Situation:
- Bought 100 shares of Tech Corp for $10,000 ($100/share)
- Current value: $7,000 ($70/share) = $3,000 unrealized loss
- Already realized $4,000 in capital gains from other investments this year
Without tax-loss selling:
John would owe taxes on the full $4,000 capital gain.
With tax-loss selling:
- John sells Tech Corp on December 29 for $7,000
- Realizes the $3,000 loss
- Uses that loss to offset part of his $4,000 gain
- Now only owes taxes on $1,000 ($4,000 – $3,000)
- If he wants to maintain exposure to Tech Corp, he waits 30+ days and repurchases, or immediately buys a similar but not identical investment
Common Mistakes to Avoid
I’ve seen plenty of investors make these errors when implementing tax-loss selling:
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Waiting until the absolute last day
Market volatility or technical issues could prevent execution. Give yourself a buffer of a few days. -
Violating the wash sale rule
Make sure you understand the 30-day window rules for your jurisdiction. -
Selling investments with long-term potential just for tax benefits
Sometimes it’s better to hold onto quality investments despite short-term losses. -
Focusing only on the tax benefit, not the investment merit
Don’t make investment decisions solely for tax reasons. Consider the bigger picture. -
Not keeping detailed records
Document purchase dates, sale dates, and amounts carefully for tax reporting.
Special Considerations for 2024
This year has seen some unique market conditions that might affect your tax-loss selling strategy:
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Volatile market conditions – Many sectors have experienced significant swings, potentially creating more tax-loss selling opportunities than usual.
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Settlement cycle change in Canada – As mentioned earlier, Canada’s move to T+1 settlement has changed the deadline dynamics.
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Sector-specific opportunities – Certain sectors like resource stocks have seen significant declines, potentially creating both tax-loss selling and subsequent buying opportunities.
Final Thoughts and Next Steps
Tax-loss selling isn’t just about cutting losses – it’s about making strategic decisions that optimize your after-tax returns. Here’s what you should do now:
- Review your portfolio ASAP to identify potential candidates for tax-loss selling
- Consult with a tax professional about your specific situation
- Don’t wait until the last minute – consider executing your strategy in early to mid-December
- Keep good records of all transactions for tax filing purposes
- Look for potential buying opportunities created by others’ tax-loss selling
Remember, while I’ve provided the key dates and information about tax-loss selling, everyone’s financial situation is unique. This information shouldn’t be considered tax advice – always consult with a qualified tax professional before making decisions.
The clock is ticking! With the right approach to tax-loss selling, you can turn this year’s investment lemons into tax lemonade – but only if you act before the deadline.
Have you implemented tax-loss selling in previous years? What strategies worked best for you? I’d love to hear about your experiences in the comments!

How to AVOID Taxes (Legally) When you SELL Stocks
FAQ
When to sell stocks at a loss for taxes?
It might be worthwhile if you’re in a high tax bracket or have significant realized capital gains since it can offset those and reduce your tax liability. If you’re in a lower tax bracket or don’t have significant capital gains, then tax-loss harvesting might not be worth it since the benefits might be limited.
What is the $3000 loss rule?
The Internal Revenue Code allows taxpayers to claim a capital loss deduction from their annual capital gains. Capital loss deductions from regular income are limited to $3,000 a year. Losses over this limit can be carried forward and claimed in future tax years if you make use of a capital loss carryover.
Will capital gains tax be eliminated in 2025?
The 2025 tax law signed by President Trump, known as the One Big Beautiful Bill Act, preserves the existing capital gains tax structure, keeping long-term rates at 0%, 15% and 20%. Although the law leaves capital gains brackets unchanged, it creates the “Trump Account,” a new savings vehicle for children.
What is the 30 day rule for tax-loss selling?
Be aware of the superficial loss rules
These rules look 30 days in the past and 30 days in the future. If an “identical property” is acquired during this 61-day period, which includes the sale date, and you continue to hold the repurchased investment on the 30th day following the sale, the capital loss will be denied.