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RentCaddie
Free rental tools

Free calculators. No signup wall.

The math we use ourselves to evaluate deals, screen applicants, and prorate rent. Use them right here. We don't ask for your email.

Rent affordabilityCap rateCash-on-cash1% ruleProrate rentLate feeForms & templates
Tenant rent affordability
Rent-to-income ratio for applicant screening.
$
$
Rent-to-income
Safe — rent fits
32.4%
Income multiple: 3.09x rent
Rule of thumb: Industry standard is 3x rent. Under 33% is safe. 33–40% is stretched. Over 50% means they'll be late when the car breaks down.
Cap rate
Net operating income divided by purchase price.
$
$
$
Cap rate
Strong cash-flow market
10.22%
Net operating income: $18,400/year
Rule of thumb: Cap rate ignores financing. Use it to compare deals in the same market. Different markets have different 'good' cap rates — 4% is great in California, terrible in Memphis.
Cash-on-cash return
What your actual cash is earning, after the mortgage.
$
$
$
$
%
%
Annual cash-on-cash
Acceptable
7.40%
Monthly cash flow: $296
Rule of thumb: Cap rate ignores financing. Cash-on-cash tells you what your down payment is really making each year. Under 6% and you'd be better off in an index fund. 8–12% is healthy.
1% rule checker
Monthly rent should be ≥ 1% of purchase price.
$
$
Rent-to-price
Hits the rule
1.00%
Rent needed to hit 1%: $1,650
Rule of thumb: Old-school filter, not a verdict. A $150k house should rent for $1,500+ to cash flow under normal conditions. It's a screen, not a green light.
Prorate rent
Daily rate × days occupied for partial-month move-ins.
$
Prorated rent
$840
Daily rate: $60/day
Rule of thumb: Use actual days-in-month, not always 30. Some states require it; all tenants notice. Charge the prorate as a line item on the move-in invoice, not folded into first-month rent.
Late fee accrual
Flat fee after grace day + daily accrual until paid.
$
$
$
Total late fee
$145
8.1% of monthly rent
Rule of thumb: Most states cap total late fees at 5–10% of monthly rent. Use the in-product per-property config to make this automatic — manual late fees are how operators leave money on the table.
Forms & checklists

Rental paperwork, ready to print.

Vetted by an actual operator running real doors. Not legal advice — review with your state-specific attorney before relying on any of these in a dispute.

Move-in inspection checklist
In product

Room-by-room walkthrough form. Mark condition, photo evidence, signatures from PM and tenant. Use this to dodge security deposit disputes.

Move-out inspection checklist
In product

Same form as move-in, plus a damage-comparison column. Tenant signs, you sign, deposit accounting goes off this.

Co-living lease template
In product

Per-room lease structure with house-rules section, utilities flex, security deposit handling, and ESIGN/UETA-compliant signature blocks.

Notice to vacate
In product

30-day notice for tenants to file via portal, or a PM-side variant for non-renewal scenarios. State-by-state variation flagged.

Lease amendment
In product

Rent change, term extension, add-roommate, parking, utilities, or custom. E-signed by tenant; auto-applies to the lease on signature.

Pre-screening application
In product

The 30-second filter form to use before running paid screening. Filters out applicants below your income / pet / move-in date thresholds before they pay the fee.

All forms live inside RentCaddie. Start a free trial to use them for your portfolio — or just look at the published templates if you want to roll your own.
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