How do you reset your cost basis?

Asked by: Lulu Harris  |  Last update: June 1, 2026
Score: 4.1/5 (19 votes)

You can effectively reset your cost basis by selling an appreciated investment and immediately buying it back (tax-gain harvesting) to establish a new, higher basis for future taxes, or by correcting errors with your broker or on your tax forms if the original basis was wrong, while inheritance automatically provides a "step-up" to current market value. Be cautious with the wash-sale rule if selling at a loss.

How do I adjust my cost basis?

The cost basis of an asset or an investment may be adjusted upwards by adding the initial cash basis used to purchase the asset to the costs associated with increasing the value of the asset.

How do I reset my 6 year rule?

You cannot nominate another property as your main residence during the period you're applying this rule. If you move back into the property and live in it again, the six-year clock resets.

Is there a loophole around capital gains tax?

Capital Gains Tax 6 Year Rule Explained

To qualify, the property must have been your home before you left. If you sell within the six year exemption period, you can generally claim a full main residence exemption from CGT, provided you have not nominated another property as your main residence during that time.

How much capital gains do I pay on $100,000?

You'll need to add half of your profit to your income for the year. Because your profit was $100,000, you'll report $50,000 as a taxable capital gain. Your personal tax rate is then applied to the total amount of income you reported to determine how much tax you owe.

Adjusted Basis - General Concepts

28 related questions found

How does IRS verify stock cost basis?

The IRS expects taxpayers to keep the original documentation for capital assets, such as real estate and investments. It uses these documents, along with third-party records, bank statements and published market data, to verify the cost basis of assets.

What happens if I don't know my cost basis?

The bottom line is that the IRS expects you to maintain records that identify the cost basis of your securities. If you don't have adequate records, you might have to rely on the cost basis that your brokerage firm reports—or you may be required to treat the cost basis as zero, which could mean owing more in taxes.

What is the 20% rule for capital gains?

You may owe capital gains tax on any realized gain on the sale of an asset, but not on unrealized capital gains. Long-term capital gains — that is, on assets held for a year or longer — are taxed at a 0%, 15% or 20% rate, depending on your total taxable income for the year.

What is a simple trick for avoiding capital gains tax?

A common way to defer or reduce your capital gains taxes is to use tax-advantaged accounts. Retirement accounts such as 401(k) plans, and individual retirement accounts offer tax-deferred investment. You don't pay income or capital gains taxes on assets while they remain in the account.

How to get 0% tax on capital gains?

Capital gains tax rates

A capital gains rate of 0% applies if your taxable income is less than or equal to: $48,350 for single and married filing separately; $96,700 for married filing jointly and qualifying surviving spouse; and. $64,750 for head of household.

What is the 5 year rule for capital gains tax?

If you decide to sell a property that you've lived in for at least 2 of the past 5 years, you may be able to exclude up to $250,000 if you file individually or $500,000 if you file jointly.

What is the cost basis loophole?

When someone inherits investment assets, the IRS resets the asset's original cost basis to its value at the date of the inheritance. The heir then pays capital gains taxes on that basis. The result is a loophole in tax law that reduces or even eliminates capital gains tax on the sale of these inherited assets.

Is there a one-time forgiveness for capital gains?

You can sell your primary residence and be exempt from capital gains taxes on the first $250,000 if you're single and $500,000 if married filing jointly. This exemption is only allowable once every two years.

What if my 1099-B does not show cost basis?

The Form 1099-B that you receive might only report the sale date and sales proceeds. If it does not report the date acquired or cost basis, you still need to enter that information when you report your Form 1099-B in the TaxAct program so that it will transfer to Schedule D and/or Form 8949.

What to do when the cost basis is missing?

Use a tool like Yahoo Finance to retrieve historical prices. Use the transactions report for the account in which the positions were sold to determine the sales proceeds. Subtract the amount paid at the time of purchase from the amount received at the time of sell to determine your missing cost basis.

Can you change the cost basis?

Yes, you may change the cost basis method used on your investment at any time. Once you change your method, it will be used on any sales of shares that occur after the change. You cannot change the method used on a sale that has already occurred.

What triggers most IRS audits?

Here are 12 IRS audit triggers to be aware of:

  • Claiming 100% business use of a vehicle. ...
  • Claiming a loss on a hobby. ...
  • Home office deduction. ...
  • Deducting business meals, travel, and entertainment. ...
  • Earned income tax credit (EITC) ...
  • Dealing in cryptocurrency and other digital assets. ...
  • Taking early withdrawals from retirement accounts.

Who keeps track of cost basis?

Thanks to a law passed in 2008, taxpayers receive help keeping track of their tax basis. The law requires brokers to track the basis of specified securities (including stocks and mutual fund shares) purchased in 2011 and later years and report the basis amounts to investors (and the IRS) when the securities are sold.

How can I legally avoid capital gains tax?

How can I reduce capital gains taxes?

  1. Spread your investment gains over several years. With an investment that has performed strongly, you might, for example, sell a portion at the end of 2025, another part in 2026 and the remainder early in 2027. ...
  2. Manage your tax bracket. ...
  3. Sell shares with the highest cost basis.

What is the 6 year rule?

If you use your former home to produce income (for example, you rent it out or make it available for rent), you can choose to treat it as your main residence for up to 6 years after you stop living in it. This is sometimes called the '6-year rule'. You can choose when to stop the period covered by your choice.