Weekly investing can be slightly ahead because you invest sooner, but the difference is usually small. Use the calculator to compare weekly vs monthly with the same annual total.
Compare weekly vs monthly (calculator)Mathematically, investing weekly can be slightly better because some money gets invested sooner. In practice, the difference is usually small — the best choice is the schedule you’ll stick with consistently.
If you invest weekly, some contributions have extra days/weeks to compound. Over long periods this can add up — but it’s often modest compared with the impact of time and total amount invested.
Run two scenarios in the Money Growth calculator: one with weekly contributions and one with monthly contributions (same annual total). Compare the outcomes over 10, 20, and 30 years.
Weekly can be slightly better because you invest sooner, but the difference is usually small. Consistency matters more.
Make the annual total the same. For example, $50/week is about $216/month. Then compare using the same return and timeline.
Both weekly and monthly investing spread purchases over time. Weekly just does it a bit more frequently.
Use the Money Growth calculator and test weekly vs monthly settings.