QUESTION: Dollar-Cost Averaging (DCA): how much and how often should I invest?
Determining the optimal amount and frequency of regular investments requires a systematic approach based on your current income, liabilities, and financial goals. The following proven scheme of action usually works for regular investing, helping to build a reliable and sustainable investment process. Follow this algorithm to ensure that your contribution amount is comfortable for your budget and that consistency brings the maximum cumulative effect over the long term.
Choosing a specific amount is always individual, but the golden rule is to invest 10 to 20 percent of each regular cash inflow. As for frequency, tying it to your salary cycle—weekly, bi-weekly, or monthly—is the most logical and convenient option. More frequent purchases, such as daily ones, do not provide a significant advantage over the long run, but they create unnecessary transaction overhead and complicate bookkeeping. The main thing here is not so much the absolute amount of the initial contributions as the stability and inevitability of the process, which over time will lead to the formation of significant capital thanks to compound interest.