RealYield

uk.co.realyieldPublished by realyield.co.ukOfficial publisherv1.0.0Updated Oct 24, 2026

UK buy-to-let maths: true net yield, cashflow, Section 24, stamp duty and area rental yields.

VerifiedStreamable HTTPWeb executableFinance

Overview

AI-generated overview

A remote MCP endpoint for UK buy-to-let property maths: net yield, cashflow, Section 24 tax, stamp duty and area rental yields.

What you can do
RealYield is a remote MCP server that gives an assistant UK buy-to-let property calculations. According to its registry description, it covers true net yield, cashflow, Section 24 tax treatment, stamp duty and area rental yields. No individual tools are listed in the manifest, so the exact operations and inputs are not documented here.
When to use it
Worth considering when an assistant needs to work through UK buy-to-let deal numbers, such as comparing net yields, checking cashflow after tax, or looking at rental yields for an area. Less relevant for property outside the UK or for general financial advice.
Requirements
A remote streamable HTTP MCP endpoint at the provider's site; no package installation is needed. The manifest declares no authentication, no environment variables and no headers, and no account or API key is documented. Network access to the provider's endpoint is required.
Before you install
The manifest declares no credentials, but the endpoint is third-party and remote, so any figures or property details sent to it leave the user's machine. Calculations such as stamp duty, Section 24 and yields are estimates for planning, not tax or investment advice, and should be checked against current rules and a qualified adviser.

Installation

In SourceWeft

  1. Open RealYield in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/uk.co.realyield%2Frealyield/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "realyield": {
      "type": "http",
      "url": "https://www.realyield.co.uk/mcp"
    }
  }
}

Tools

11

list_realyield_calculators

List RealYield calculators

Lists every UK property calculator on realyield.co.uk with a one-line description and URL. Use it to find the right tool for a landlord question before navigating or calculating.

Takes no parameters.

search_realyield

Search RealYield

Searches realyield.co.uk for calculators, articles, glossary terms and downloadable templates about UK buy-to-let, landlord tax and property regulation. Returns titles, summaries and URLs.

Parameterstypelimitqueryrequired

define_property_term

Define a property term

Looks up a UK property investment or landlord tax term in the RealYield glossary, for example 'ICR', 'Section 24', 'gross yield' or 'void period', and returns the definition with a link to the full entry. Use it when a reader asks what a term in an article means.

Parameterstermrequired

analyse_buy_to_let_deal

Analyse a buy-to-let deal

Full UK buy-to-let analysis for a purchase price and monthly rent: gross and true net yield after service charge, ground rent, agent fees, repairs, voids and mortgage interest, Section 24 tax, monthly cashflow before and after tax, break-even mortgage rate, a 0 to 100 deal score, and stress scenarios such as a rate shock, a recession and extended voids. Agent fee, repairs and voids the user has not given take standard assumptions, listed in assumptions_applied. Returns a link that opens the same deal in the calculator.

Parameterstax_bandmonthly_rentrequiredmortgage_rateownership_typepurchase_pricerequiredvaluation_basismortgage_balanceutilities_monthlyground_rent_annualrepairs_percentageagent_fee_percentagecorporation_tax_rate+4 more

calculate_stamp_duty

Calculate stamp duty (SDLT)

Calculates Stamp Duty Land Tax for a property purchase in England or Northern Ireland at current rates, with the band-by-band breakdown, the effective rate, a comparison across first-time buyer, home mover and additional-property (buy-to-let, 5% surcharge) rates, and the total cash needed with the deposit.

ParametersbuyerTypepropertyPricerequireddepositPercent

calculate_section_24_tax

Calculate Section 24 tax

Works out a UK landlord's income tax on rental profit under Section 24, where mortgage interest is not deductible and is replaced by a 20% tax credit. Returns the tax bill, the 20% credit, cashflow after tax, the extra tax compared with full interest relief, and the same figures for all three tax bands.

ParameterstaxBandannualRentrequiredannualOperatingCostsannualMortgageInterest

compare_personal_vs_company_ownership

Compare personal vs limited company

Compares the annual tax on a UK rental property held personally (Section 24 rules) against holding it in a limited company (corporation tax, then dividend tax on profit extracted). Returns net profit and effective tax rate for each structure and which one pays less this year.

ParametersannualRentrequireddividendAmountpersonalTaxBandannualOperatingCostsannualMortgageInterest

calculate_btl_mortgage

Calculate a buy-to-let mortgage

Calculates a UK buy-to-let mortgage: loan amount, loan-to-value, monthly and annual payment (interest-only or repayment), total interest, the interest coverage ratio lenders test against rent, and stress-test results at higher rates.

ParametersproductFeemonthlyRentinterestRatemortgageTermmortgageTypedepositAmountpropertyValuerequiredfeeAddedToLoan

calculate_capital_gains_tax

Calculate capital gains tax

Estimates UK capital gains tax on selling a rental property, shares or another asset: gain after allowable costs, private residence relief where it applied, the annual exempt amount, tax at basic and higher rates based on the seller's income, and how much a joint sale with a spouse or civil partner would save.

ParameterssdltPaidassetTypesalePricerequiredannualIncomesellingCostsownershipTypepurchaseCostspurchasePricerequiredisMainResidenceimprovementCoststotalMonthsOwnedotherGainsThisYear+1 more

lookup_area_rental_yields

Look up rental yields by area

Looks up average rent, average price and gross rental yield for local authority areas in England and Wales, from ONS rents and HM Land Registry prices updated monthly. Pass an area name to get its figures and national rank, or leave it out to get the highest-yielding areas, optionally within a region.

Parametersarealimitregion

check_deal

Check a property listing (Deal Check)

Checks a specific buy-to-let property in England or Wales from its postcode, asking price, type and bedrooms, using live public data: sold prices nearby and a price guide based on them, rent (the area average unless given), true net yield and cashflow, stress tests, crime, flood risk and live warnings, coal mining, planning constraints (conservation areas, Article 4, listed buildings), transport, schools and the local rental market. The postcode is the property's, not the user's location. Returns a 0 to 100 score with its parts, flags, a rule-based summary and a link to the full report. Results are educational estimates, not financial advice. Needs the user to sign in to their RealYield account; takes up to 30 seconds.

Parameterstenurebedroomsrequiredpostcoderequiredtax_bandepc_ratingdeposit_pctrepairs_pctvoid_monthsasking_pricerequiredmonthly_rentagent_fee_pctmortgage_rate+4 more

Version history

1
  1. v1.0.0LatestOct 16, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.