Rental Cash Flow Calculator
Shows what a rental leaves you each month.
Cash flow per month
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Cash flow per year —
Effective rent —
Total costs per month —
The formula
cash flow = rent × (1 − vacancy) − mortgage − tax − insurance − repairs − management
Repairs and management are taken as a share of the full rent.
What to watch out for
Set aside something for large one-off costs, such as a roof or boiler, even if the monthly figure looks healthy.
Frequently Asked Questions
What is a good rental cash flow?
Positive after realistic allowances for vacancy and repairs. Many deals look fine until those are included.