Modern Abacusα

Step‑Up Investment Calculator

Estimate future value of one‑time or recurring investments with monthly compounding. Model annual step‑ups, inflation‑adjusted (real) returns and view year/month breakdowns — great for planners, advisors and DIY investors.

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Lumpsum & Recurring Modes

Support for single deposits or monthly contributions so you can model different investment strategies.

Annual Step‑Up & CAGR Modeling

Apply an annual step‑up to recurring contributions and simulate growth at your chosen annual return rate.

Real (Inflation‑Adjusted) Values

Provide an inflation rate to see the purchasing‑power adjusted outcome and compare nominal vs real returns.

Detailed Breakdowns & Sharing

Yearly and monthly tables, shareable short links and downloadable screenshots for reports and collaboration.

Step‑Up Investment Calculator

Investment Type
Duration

Interest compounds monthly. Annual step-up increases recurring monthly contribution each year. Inflation (if provided) is used to compute real value.

Results

Enter valid inputs to compute results.

About this tool

This calculator helps investors and planners understand how regular contributions, occasional lump sums and annual contribution increases (step‑ups) grow over time when compounded monthly. Enter your expected annual return and optional inflation rate to compare nominal and real outcomes.

Key capabilities

Who should use it

Tip: toggle between Lumpsum and Recurring modes, set an annual step‑up to reflect wage growth, and provide an inflation rate to understand real returns.