Four calculators built for serious property investors. No fluff, no optimistic assumptions — just honest arithmetic so you can make the right call.
These tools are for illustration purposes only and do not constitute financial, tax, or investment advice. Figures are estimates based on the inputs provided. Magna Partners are not tax advisers. Investors should seek independent professional advice before making any investment decision.
Tool 01
Calculate gross yield, net yield, monthly cashflow and total return on investment. Adjust for mortgage to see leveraged vs unleveraged performance.
Property
Typical leasehold: £800–£2,500/yr
Full management typically 10–12%
Typical allowance: £400–£800/yr
Mortgage (optional)
Gross Yield
Net Yield
Monthly Rent
Monthly Costs
Monthly Cashflow
Annual Income
Cash Invested
Cash-on-Cash ROI
Breakeven (months)
Magna Verdict
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Tool 02
See exactly what happens to your monthly cashflow if interest rates rise. Know your break-even rate before you commit.
Property & Finance
Income & Costs
Service charge, agent fees, maintenance
Stress Test Range
Current Monthly Cashflow
Break-Even Mortgage Rate
Cashflow Headroom
Cashflow at Different Rates
Stress Test Result
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Tool 03
Project your property value, outstanding mortgage and equity position over 5, 10, 15 and 20 years. Includes cumulative rental income.
Property
UK avg 4.3% historically. Hull: Savills forecast 28.2% to 2029
UK rental inflation avg ~3–5% p.a.
Mortgage (optional)
Total Return at Year 20
Property Value at Year 20
Equity at Year 20
Tool 04
Compare your real take-home income as a personal investor (subject to Section 24 restrictions) vs purchasing through a limited company (full mortgage interest offset permitted).
Purchase Structure
Rental Income
Allowable Deductions
Mortgage Interest
Your Income Tax Rate
Small profits rate applies on profits up to £50,000
Annual Net Income After Tax
Monthly Take-Home
Effective Net Yield
Income Breakdown
Gross Rent (annual)
Total Deductions
Taxable Profit
Tax Liability
Tax Note
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