Landlord calculators and tools

Thirteen free tools, each built on the rule behind it. Nothing you enter leaves your browser.

Certificate Cost Calculator

EICR, gas safety, EPC, legionella and fire risk prices by property and region, with the annual cost of staying compliant and an optional bundle quote.

Costs

EPC C by 2030 Planner

Estimate the rating, see the cheapest route to band C, and find where the £10,000 cap and the exemption fall for your property.

Deadline 1 October 2030

Compliance Calendar

Every certificate renewal, legal deadline and government date for a property, with a file for your own calendar.

Download .ics

Rental Yield Calculator

Gross and net yield, cash flow before and after tax under Section 24, and the break-even rent.

Money

Renters' Rights Act Checker

Fourteen questions on the Act and the safety duties the landlord database will hold. A score, the gaps ranked by penalty, the fix for each.

Compliance

Boiler Cover Comparer

Cover or pay as you go, using the breakdown rate for your boiler's age, the cover level and the excess.

Costs

Making Tax Digital Checker

When quarterly digital reporting starts for you, from your gross rental and self-employment income, with the deadlines and cost.

From April 2026

Deposit Calculator

The 5-week deposit cap, holding deposit and rent-in-advance limits, the 30-day protection deadline and the cost of missing it.

Tenant Fees Act

Tax, borrowing, licensing and selling

Section 24 Tax Calculator

Income tax on your rent with the mortgage interest restriction, and what it costs against the old rules.

Income tax

HMO Licence Fee Checker

New and renewal HMO licence fees for 10 councils, each with the date we checked.

Licensing

Rent Increase Calculator

Percentage rise and the earliest date a section 13 rent increase can start.

Renters' Rights Act

Buy-to-Let Stress Test

Rent needed at 125 or 145 percent interest cover, and the most you could borrow.

Borrowing

Landlord Capital Gains Tax Calculator

Capital gains tax on selling a rental at 18 or 24 percent, with your 60-day deadline.

Selling

Which tool first

New landlord or new property: start with the Renters' Rights checker to find the gaps, price the certificates with the certificate calculator, then put every date in the compliance calendar. Deciding whether to keep a property: the yield calculator and the EPC C planner together show the cash flow and the capital spend to 2030. All the tools link to the guides that explain the rules they use.