Investing · General financial education

Averaging into purchases

Dollar-cost averaging means buying fixed amounts over time instead of all at once. With moving prices you buy more or fewer units for the same cash each time.

In more detail

It is a purchase pattern, not a return promise. Whether it ends better or worse than a lump sum depends on the price path and is unknown in advance. Per-trade fees and income timing matter too. Finmon recommends neither the drip plan nor the lump sum.

Background

Use this as a model question: how are purchases spread over time? There is no signal to buy, no product, and no instruction that you should invest. This sits next to compound growth, your time horizon, fees, and ETFs.

An example

Each month €100 into the same fund: more units when the price is low, fewer when it is high. Nobody knows in advance how that compares with €1,200 all at once.

A common misconception

A savings plan always beats investing all at once.

The outcome depends on the price path. DCA is a pattern, not a guarantee.

Source: Investor.gov · Dollar cost averaging. Last reviewed: 2026-11-01. Editorially reviewed on 2026-11-01. Next review 2027-11-01. Version 0.2.0. Finmon explains. It does not advise. Not investment, tax or legal advice.