What Is Cost Basis? A Plain-English Guide
Cost basis is what you paid for a holding, and it sets your taxable gain. Here is how it works, how averaging and lots change it, and why it matters.
Plain-English guides on tracking a portfolio by hand — cost basis, unrealized P/L, broker comparisons, and the concepts behind them.
Cost basis is what you paid for a holding, and it sets your taxable gain. Here is how it works, how averaging and lots change it, and why it matters.
Your real portfolio is split across brokers, and none of them show the whole thing. Here is how to combine every account into one live-priced view.
A spreadsheet is free but manual; a tracker prices itself but costs money. We compare the two on accuracy, effort, and trust so you can pick with open eyes.
Spreadsheets go stale the moment prices move. Here is a calmer way to track every holding across accounts, with live prices and honest cost-basis math.
A realized gain is locked in when you sell; an unrealized gain is still on paper. The difference changes how you read your portfolio and your taxes.