Irregular income, and a SIP-style habit that had to bend around it
A freelance consultant, 33 — Berlin, Germany
The situation
Freelance income that swings from €2,000 to €9,000 a month, with no employer-run retirement plan and a self-directed investment habit that had been getting skipped in lean months and overcorrected in flush ones.
The approach
Modeled a recurring-investment plan at the lean-month sustainable amount as the floor, using the step-up feature to add a lump-sum top-up in months above a set income threshold rather than trying to force a single fixed monthly figure that wouldn't survive a bad quarter.
The outcome
Projected a materially larger long-run corpus from the flexible floor-plus-top-up approach than the all-or-nothing pattern it replaced, purely from consistency — the same total amount invested over a year, just no longer skipped in lean months.
Tools used
- SIP-style recurring investment calculator
- Scenario comparison