Capital gains

Before you rely on it

What to check

Reconstruct basis from records: purchase price plus commissions, improvements and reinvested distributions.

The common error

Where people go wrong with capital gains

Understating basis because the records are gone. An understated basis overstates the gain and overstates the tax, and the taxpayer pays for the missing paperwork.

Worked through

Capital gains in plain numbers

You buy shares for $5,000 and later sell them for $8,200, paying a $50 fee. Proceeds after the fee are $8,150 and the gain is $8,150 − $5,000 = $3,150. Suppose the sale qualifies for a long-term rate of 15%, purely as an illustration, and the tax would be $472.50 and you would keep $2,677.50 of the gain. If the same gain were taxed at a short-term rate of 24%, the tax would be $756. Timing, holding period and your income all change which rate applies. Losses from other sales can offset gains, reducing the amount that is taxed.

Easily confused

Capital gains and its neighbours

A capital gain is not income from dividends or interest, and it is not the same as unrealized appreciation. Dividends and interest are payments received while you hold an asset. A gain is the profit from selling. Until you sell, the increase is unrealized and generally not taxed. Short-term and long-term gains are distinguished by the holding period and are often taxed differently. Realized and unrealized also differ from paper returns shown in a fund statement, and the tax event comes from the sale or another triggering event, not from the price simply moving.

In real decisions

Where capital gains turns up

Investors plan around capital gains when deciding what to sell and when. Someone might hold an asset a little longer to qualify for a lower rate, or sell losers to offset winners. Homeowners consider gains when selling a property, where exclusions may apply. Small business owners weigh them when selling a company. Funds distribute gains to shareholders, which can create a tax bill in years when you sold nothing. Cost basis records matter because gain is measured against them.

Know the edges

Where capital gains stops being reliable

Tax rules vary by country, region, asset type and personal circumstances, and they change. Estimates in a calculator use the rates you enter, not your full tax situation. State taxes, surtaxes on higher incomes and rules on specific assets add complexity. Wash-sale and similar rules can disallow losses. Inherited or gifted assets use different basis rules. Confirm the details with the current rules or a qualified tax professional before acting on an estimate.

Quick answers

What people ask about capital gains

Do I owe tax if I reinvest the proceeds? Generally yes. A sale is a taxable event even if you buy something else with the money. Some special rules, such as for certain property exchanges, defer tax, and they have strict conditions.

Can losses offset gains? In many systems, yes. Losses can reduce gains in the same year and sometimes carry forward. Specific limits and wash-sale rules apply, so check the current rules.