> ## Documentation Index
> Fetch the complete documentation index at: https://help.parafin.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Adjusting assumptions
> Set revenue, budget, and investment assumptions to update design outputs.
Three groups of assumptions drive Parafin's financial outputs: revenue, budget, and investment. Adjust any of them, then click **Recalculate** in the top left to refresh the outputs.
## Editing assumptions from the variant popup
Open every project assumption from a single place by clicking **Edit Assumptions** in the variant popup. Your changes are reflected across every variant in the project, not just the selected one.
## Revenue
Set stabilized-year revenue for guestrooms, meeting rooms, and food & beverage. For each room type, enter ADR and occupancy.
## Budget
Enter land acquisition, hard costs, soft costs, FF\&E, developer overhead, and project contingency. Line items Parafin doesn't break out separately (OS\&E, IT, pre-opening) go into soft costs. Developer overhead and contingency are entered as percentages of the total budget.
## Investment
Set NOI margin, disposition, and financing. Construction loan interest is included in the project budget. The sale date assumes the first hypothetical stabilized year.
