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Oycora methodology

Percentage-Based Expense Bases

The income amount to which a percentage-based expense assumption is applied.

Methodology v1.0Effective 2026-08-23Last reviewed 2026-08-23

How this is calculated

Percentage expense = configured rate × canonical income basis

Percentage property management is based on collected rental income and excludes recurring other income. Percentage expenses are recomputed from projected income and do not independently double-grow.

Why it matters

Using the correct basis prevents a percentage expense from being understated, overstated, or grown twice.

What is included

  • The specific income basis assigned to the expense type

What is excluded

  • Income categories outside that canonical basis

Assumptions and limitations

  • Actual contracts may use a different fee basis and should be modeled accordingly where supported.

Used in Oycora

Property Analysis

What Is the 50% Rule for Rental Property Expenses?

The 50% Rule is a quick way to estimate rental-property operating expenses when detailed numbers are not yet available. Learn how it works, what it includes, where it breaks down, and why it should be replaced with property-specific expenses before making a decision.

Published

Oycora Guide · Property Analysis

The Complete Guide to Rental Property Expenses, Reserves, and Cash Flow

Rental income does not become cash flow until the property’s real costs are accounted for. This Guide explains operating expenses, maintenance, capital expenditures, reserves, debt service, and how those categories work together to determine what a rental actually produces.

17 min read · Last reviewed Aug 2026

Read Guide →

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