Landlord & investor
Build your first buy-to-let on sound foundations
A first buy-to-let is both a property purchase and the start of a rental business. The mortgage is usually assessed primarily against the rent, but lenders also consider your personal circumstances, experience, deposit, property choice and ability to manage costs when the property is empty or requires repair.
We will assess your complete circumstances, explain the available routes and recommend a mortgage that supports your wider plans. Your initial conversation is without obligation.
How rental stress testing affects borrowing
Buy-to-let affordability is commonly measured using an Interest Coverage Ratio, or ICR. A lender applies an assumed interest rate to the proposed mortgage and requires the rent to cover that stressed interest by a set percentage. For example, a £200,000 loan stressed at 5.50% with a 145% ICR would require rent of approximately £1,329 per month: £200,000 × 5.50% × 145% ÷ 12. The lender’s actual rate and ICR depend on the product, ownership structure, tax status and property.
Who this may help
We help homeowners buying their first investment, first-time buyers who want to become landlords, clients retaining a former home, parents purchasing student accommodation, and investors choosing between personal and limited-company ownership. Some lenders distinguish between a first-time landlord and someone who has never owned a residential property.
What needs to be considered
- Deposit and source of funds
- Expected rent, gross yield and the lender’s ICR calculation
- Whether personal income is required or can support a rental shortfall through top slicing
- Personal ownership, joint ownership or an SPV limited company
- Property condition, EPC, licensing and rental demand
- The mortgage payment after the initial product ends
- Agent fees, insurance, maintenance, tax and void periods
- Whether a standard property is more suitable than an HMO or holiday let for a first investment
How ERG Finance approaches it
We start with the investment rather than the headline rate. We test the rent, product fee, mortgage payment, realistic running costs and exit options, then identify lenders that accept the applicant’s experience and ownership structure. If a specialist property would create an unnecessary first-step restriction, we explain the alternatives.
The mortgage calculation is not the same as investment profit
Passing a lender’s ICR test only shows that the rent meets that lender’s mortgage assessment. It does not account for every business cost or prove that the property is a good investment. A separate cash-flow assessment should allow for tax, management, repairs, compliance, insurance, service charges, empty periods and future capital expenditure.
Our role
- understand the purpose of the mortgage and the outcome you need
- check affordability, lender criteria and property requirements before recommending a route
- compare the rate, fees, flexibility, early repayment charges and overall cost
- prepare the application and evidence so the lender sees a complete and accurate case
- manage the mortgage process through valuation, offer and completion
Frequently Asked Questions
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Yes. A broad range of options exists, although some lenders require you to own your home, meet a minimum income or choose a standard property.
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The required deposit varies, but buy-to-let mortgages generally require more equity than residential borrowing. Property type, loan size, experience and rental coverage influence the maximum loan-to-value.
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Interest Coverage Ratio compares gross rent with stressed mortgage interest. A 145% ICR means the required rent must equal at least 145% of the interest calculated at the lender’s stress rate.
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Some lenders allow top slicing, using verified personal disposable income to support a rental shortfall. Not every lender offers it and the full household position is assessed.
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That depends on tax, mortgage costs, access to profits, future purchases and exit plans. Obtain tax advice before exchanging contracts or setting up the structure.
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Possibly, but the lender pool can be smaller and some lenders require prior landlord experience. Licensing, management and cash-flow requirements are also more involved.
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A 30-minute telephone call with one of our advisers. Tell us a little about your situation and we’ll match you with the right person.
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YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON YOUR MORTGAGE. Buy-to-let mortgages and commercial lending are not usually regulated by the Financial Conduct Authority. Tax treatment depends on individual circumstances and may change. ERG Finance does not provide tax or legal advice. Obtain advice from a suitably qualified accountant, tax adviser and solicitor before choosing an ownership structure.