> ## Documentation Index
> Fetch the complete documentation index at: https://docs.deal-pipe.de/llms.txt
> Use this file to discover all available pages before exploring further.

# Calculate and compare properties

> Review assumptions and understand scenarios.

Open a unit's calculator to consider purchase costs, financing, ongoing expenses, and the available tax scenarios together.

## Prepare a calculation

1. Check the unit's purchase price, living area, rent, and ongoing expenses.
2. Enter equity, loans, interest, and repayment. Check KfW details and refinancing assumptions where relevant.
3. Review acquisition costs and the depreciation inputs used.
4. Add the customer's personal calculation details where supported.
5. Compare results after changing inputs and review the assumptions in the export.

The calculation uses the recorded inputs. Missing details, different cost assumptions, or a different financing period can produce different results. A displayed yield and monthly cash flow answer different questions.

## Compare and share

Use property comparison for the available metrics. Before presenting to a customer, check that assumptions are consistent across the compared units. Save or export the intended scenario using the available actions.

If figures look implausible, first review the unit's inputs and the personal or organization defaults.


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