Learn · Dollar-cost averaging
What is dollar-cost averaging (DCA)?
Dollar-cost averaging means investing a fixed amount on a schedule — weekly or monthly — instead of timing one big buy. How it works, and how to run it on real S&P 500 history.
Direct answer
Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy.
What is dollar-cost averaging?
Dollar-cost averaging (DCA) is investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down.
You are not trying to buy the exact bottom. You are building a habit: cash in, units held, repeat. Run the habit on history with the dollar cost averaging calculator.
Why do people use DCA?
- It removes the “should I wait?” decision each payday.
- It spreads purchase prices across many dates instead of one.
- It matches how most people actually get paid.
It is not magic. In a long bull market, putting everything in on day one often wins on paper. DCA wins on process — and sometimes on outcomes when markets are choppy. Compare both in the DCA vs lump sum calculator.
What does SteadyGrow mean by DCA?
On our calculators, “blind DCA” means a fixed cash amount every period on a real index or Bitcoin path since 2015. We also show SteadyGrow sizing: same long-run budget, week-to-week amounts that can flex with the model.
Prefer a monthly paycheck framing? Use the monthly investment calculator.
What is DCA not?
- It is not a guarantee of profit.
- It is not stock picking.
- It is not the same as “buy the dip” with a lump of cash you already have — that is a different decision (see DCA vs lump sum).
What should I read next?
Frequently asked questions
- What is dollar-cost averaging (DCA)?
- Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy.
- What is dollar-cost averaging?
- Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy. See the full guide and linked calculators on this page for the historical numbers.
- Why do people use DCA?
- Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy. See the full guide and linked calculators on this page for the historical numbers.
- What does SteadyGrow mean by DCA?
- Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy. See the full guide and linked calculators on this page for the historical numbers.
- What is DCA not?
- Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy. See the full guide and linked calculators on this page for the historical numbers.
- What should I read next?
- Dollar-cost averaging (DCA) means investing the same amount of money on a fixed schedule — every week or every month — whether prices are up or down, instead of trying to time one perfect buy. See the full guide and linked calculators on this page for the historical numbers.
- Can I run this on real market history?
- Yes. Every SteadyGrow DCA guide links to a free historical calculator on published prices since 2015 — not a fixed 7–10% toy rate.
Prefer a question over a definition?
SteadyGrow is built for what-ifs and boring counterfactuals — not just glossary pages. Ask what your money would have done on real history.