Cost basis is the original purchase price of an asset. Tracking cost basis is key to tax-efficient investing. Many, or all, of the products featured on this page are from our advertising partners who ...

When individuals contribute assets to form a partnership, they must calculate each partner's basis in the partnership using two separate methods. Outside basis, or book basis, tracks each partner's ...

The cost basis of a stock is the value of that stock or asset at a certain time, usually the time of purchase. It's normally calculated for tax purposes, so it's important to understand the factors ...

Chad Langager is a co-founder of Second Summit Ventures. He started as an intern at Investopedia.com, eventually leaving for the startup scene. Katrina Ávila Munichiello is an experienced editor, ...

Cost basis is the purchase cost of a particular security, including commission charges. Importantly, a cost basis can be established over a series of purchases of the same security, not just one trade ...

If you want to calculate how much you've gained or lost on an investment, you'll need to know your cost basis. It's important for your tax records, too. Let's run through a very simple example.

The cost basis of an investment or asset is the amount of the initial investment, or the original purchase price. It's an important number in tax planning for individual investors, business owners, ...