How to cut investment taxes

Harvesting tax losses to offset gains and income can help lower taxes.

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Key takeaways

  • Investment losses can help you reduce taxes by offsetting gains or income.
  • Even if you don't currently have any gains, there are benefits to harvesting losses now, since they can be used to offset income or future gains.
  • If you have more capital losses than gains, you can use up to $3,000 a year to offset ordinary income on federal income taxes, and carry over the rest to future years.

Sometimes an investment that has lost value can still do some good—or at least, not be quite so bad. The strategy that changes an investment that has lost money into a tax winner is called tax-loss harvesting.

Tax-loss harvesting may be able to help you reduce taxes now and in the future. It can also help boost your investment returns.

Tax-loss harvesting allows you to sell investments that are down, replace them with reasonably similar investments, and then offset realized investment gains with those losses. The end result is that less of your money goes to taxes and more stays invested and working for you.

"It helps clients get to their goals faster," says Christopher Fuse, asset allocation portfolio manager at Fidelity.

If you have a financial advisor, they may already be doing your tax-loss harvesting. If you're doing it yourself, it's always a good idea to consult a tax professional.

2 ways tax-loss harvesting can help manage taxes

An investment loss can be used for 2 different things:

  • The losses can be used to offset investment gains
  • The losses can offset $3,000 of income on a joint tax return in one year

Unused losses can be carried forward indefinitely

"Ugly market events, like in '07 to '09, can be an opportunity. Tax-loss harvesting is very episodic, when it's there, we look to take advantage. We put those additional losses into what we consider to be a 'tax savings account.' Your losses may insulate your taxable gains for several years," Fuse says.

That sounds great, right? But there are some important details to know as you see how tax-loss harvesting might help lower your tax bill.

Short-term versus long-term gains and losses

There are 2 types of gains and losses: short-term and long-term.

  • Short-term capital gains and losses are those realized from the sale of investments that you have owned for 1 year or less.
  • Long-term capital gains and losses are realized after selling investments held longer than 1 year.

The key difference between short- and long-term gains is the rate at which they are taxed.

Short-term capital gains are taxed at your marginal tax rate on ordinary income. The top marginal federal tax rate on ordinary income is 37%.

For those subject to the net investment income tax (NIIT), which is 3.8%, the effective rate can be as high as 40.8%. And with state and local income taxes added in, the rates can be even higher.

But for long-term capital gains, the capital-gains tax rate applies, and it's significantly lower.

When the 3.8% NIIT comes into play, the actual long-term capital-gains tax rate for high earners can be as much as 23.8%.1 The NIIT is also known as the Medicare tax.

Gains and losses in mutual funds

If you're a mutual fund investor, your short- and long-term gains may be in the form of mutual fund distributions. Keep a close eye on your funds' projected distribution dates for capital gains. Harvested losses can be used to offset these gains.

Short-term capital gains distributions from mutual funds are treated as ordinary income for tax purposes. Unlike short-term capital gains resulting from the sale of securities held directly, the investor cannot offset them with capital losses.

Find out more on Fidelity.com: Mutual funds and taxes

Harvest losses to maximize your tax savings

When looking for tax-loss selling candidates, consider investments that no longer fit your strategy, have poor prospects for future growth, or can be easily replaced by other investments that fill a similar role in your portfolio.

When you're looking for tax losses, focusing on short-term losses provides the greatest benefit because they are first used to offset short-term gains—and short-term gains are taxed at a higher marginal rate.

According to the tax code, short- and long-term losses must be used first to offset gains of the same type. But if your losses of one type exceed your gains of the same type, then you can apply the excess to the other type. For example, if you were to sell a long-term investment at a $15,000 loss but had only $5,000 in long-term gains for the year, you could apply the remaining $10,000 excess to any short-term gains.

If you have harvested short-term losses but have only unrealized long-term gains, you may want to consider saving them for the future. The least effective use of harvested short-term losses would be to apply them to long-term capital gains. But, depending on the circumstances, that may still be preferable to paying the long-term capital gains tax.

Also, keep in mind that realizing a capital loss can be effective even if you didn't realize capital gains this year, thanks to the capital loss tax deduction and carryover provisions. The tax code allows you to apply up to $3,000 a year in capital losses to reduce ordinary income, which is taxed at the same rate as short-term capital gains.

If you still have capital losses after applying them first to capital gains and then to ordinary income, you can carry them forward for use in future years.

Stay diversified, but beware of wash sales

After you have decided which investments to sell to realize losses, you'll have to determine what new investments, if any, to buy. Be careful, however, not to run afoul of the wash-sale rule.

The wash-sale rule states that your tax write-off will be disallowed if you buy the same security, a contract or option to buy the security, or a "substantially identical" security, within 30 days before or after the date you sold the loss-generating investment.

One way to avoid a wash sale on an individual stock, while still investing in the industry of the stock you sold at a loss, would be to consider substituting a mutual fund or an exchange-traded fund (ETF) that targets the same industry.

If you're not sure, you should consult a tax advisor before making the purchase.

Make tax-loss harvesting part of your year-round tax and investing strategies

The best way to maximize the value of tax-loss harvesting is to incorporate it into your year-round tax planning and investing strategy. Professional portfolio managers like Fuse who specialize in this area even build portfolios with their tax strategy in mind.

"In managing the asset allocation for our taxable portfolio we don't use big pieces like a large cap fund of funds." Says Fuse. "We want more individual investments pieces that can help us create tax efficiency. For example, we will look to invest in individual large cap value, core and growth funds. This allows us the opportunity to tax loss harvest as individual securities and styles go in and out of favor."

Fuse is also careful to avoid running afoul of the wash sale rule. "When we come up with positions, we try to avoid things that would be hard to replace. For instance, I might pick an energy ETF that is similar but not identical to multiple others in risk and return," he says.

Tax-loss harvesting and portfolio rebalancing are also a natural fit. In addition to keeping your portfolio aligned with your goals, a periodic rebalancing provides an opportunity to reexamine lagging investments that could be candidates for tax-loss harvesting.

Select the most advantageous cost basis method

Finally, take a look at how the cost basis on your investments is calculated. Cost basis is simply the price you paid for a security, plus any brokerage costs or commissions.

If you have acquired multiple lots of the same security over time, either through new purchases or dividend reinvestments, your cost basis can be calculated either as a per-share average of all the purchases (the average-cost method) or by keeping track of the actual-cost of each lot of shares (the actual cost method).

For tax-loss harvesting, the actual-cost method has the advantage of enabling you to designate specific, higher-cost shares to sell, thus increasing the amount of the realized loss. Learn more about capital gains and cost basis.

Don't undermine investment goals

Remember this saying: Don't let the tax tail wag the investment dog. If you choose to implement tax-loss harvesting, be sure to keep in mind that tax savings should not undermine your investing goals. Ultimately, a balanced strategy and frequent reevaluation to ensure that your investments are in line with your objectives is the smart approach.

If you're interested in implementing a tax-loss harvesting strategy but don't have the skill, will, or time to do it yourself, a Fidelity advisor may be able to help.

Next steps to consider

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