What Is Dollar-Cost Averaging?

Dollar-cost averaging (DCA) means investing a fixed amount of money at regular intervals, for example $200 on the first of every month, regardless of whether prices are up or down at the time.

How it smooths your price

Investing the same dollar amount each time buys more units when the price is lower and fewer units when the price is higher. Over time, that averages out your purchase price instead of betting everything on a single moment.

The problem it solves

Picking the single best moment to invest a lump sum is difficult even for professionals. Getting it wrong creates enough stress that people delay investing indefinitely. Dollar-cost averaging replaces that decision with a fixed, repeatable schedule, which removes much of the emotional pressure around timing.

What it does not do

DCA does not guarantee a better result than investing a lump sum at once. In markets that trend upward over the investing period, a lump sum invested earlier has often outperformed spreading it out, simply because more money sat invested for longer. The real benefit of DCA is behavioral. It is a system people stick to, which matters more than a theoretical edge they abandon under stress.

A natural fit with a paycheck

DCA fits naturally with regular income. An automatic monthly contribution to an investment account is dollar-cost averaging by default. This connects directly to how compound interest builds over time with consistent contributions.

Nothing here recommends investing a specific amount, on a specific schedule, into a specific investment.