Financial calculators for clearer planning
Test investment, cost, inflation and retirement assumptions—but treat every result as an estimate, not a forecast. This page explains investment calculator through scope, evidence, costs and decision boundaries.
A short fit conversation — not personal investment advice.
Inputs
Make every assumption visible
Capital
Contribution
Time
Return range
Sensitivity
See how a changed input affects the output
Boundary
A scenario cannot assess suitability
Sensitivity first
Investment Calculator — Change one assumption. See what changes.
This investment calculator for Germany explains how assumptions affect an illustrative result.
This visual organises the page’s main inputs, boundaries and next questions. It is explanatory, not a personal recommendation.
Selected input
Uses the return, contribution and time values entered.
Lower-return input
A sensitivity test, not a predicted downside limit.
Zero-return input
Shows capital and contributions without growth.
Illustrative fee impact
A simplified difference—not a cost disclosure.
Monthly compounding; contributions at month end; before tax and inflation unless stated.
Your assumptions
Scenario inputs
Hypothetical future value
Monthly compounding; contributions at month end. Before tax and inflation.
Illustrative fee impact
Simplified difference using the selected annual fee. Not a forecast or cost disclosure.
The situation
Turn assumptions into visible scenarios
Too much cash, no investment structure
Define purpose, access needs and risk before selecting investments.
A portfolio built from past decisions
Consolidate accounts to see overlap, concentration and total cost.
Retirement assumptions that do not connect
Bring pensions, private savings and contributions into testable scenarios.
Uncertainty about leaving Germany
Make mobility, currencies and portability part of the decision from the start.
What you receive
Useful for scenarios, not predictions
Calculator outputs are simplified illustrations based solely on the inputs and assumptions selected. They do not account for all taxes, costs, product rules, market sequences, currency changes or personal circumstances. Actual returns and outcomes may be materially different, including loss of capital. Every calculator should show:
- Inputs and formulas in plain language
- Whether figures are nominal or inflation-adjusted
- Whether taxes and costs are included or excluded
- Assumed contribution and compounding timing
- A zero-return and adverse-scenario option where relevant
- Date, methodology version and rounding approach
Decision framework
Your financial plan needs more than one output
A calculator cannot assess suitability, capacity for loss, product terms or cross-border implications. Use results to frame questions, then review your complete situation before acting.
Frequently asked questions
Clear answers before the next step
Are calculator results guaranteed?
No. They are hypothetical estimates based on assumptions.
Do the calculators include German taxes?
Only if a specific calculator states exactly which simplified tax assumption is included. Otherwise, taxes are excluded.
Do results include investment costs?
Only costs explicitly entered or identified in the calculator. Product and transaction costs can vary.
Can a calculator recommend a product?
No. Calculators provide educational scenarios, not personal product recommendations.
Why should I test several return assumptions?
Future returns are uncertain. A range—including adverse scenarios—shows how sensitive the result is to assumptions. —
Start with a short conversation
A scenario is a starting point—not a decision
Use estimates to frame questions, then assess your complete situation and capacity for loss.
Book an introductory call ↗A fit conversation — not personal investment advice.