BTL Remortgage

What Is a BTL Remortgage?

A BTL remortgage is the process of replacing your existing buy-to-let mortgage with a new one — either with your current lender (a "product transfer") or a different lender (a "remortgage"). Landlords typically remortgage for one of four reasons:

• Their current fixed or discount deal is ending and they want to avoid rolling onto the lender's expensive standard variable rate (SVR), which is usually 7%-9%.
• They want to release equity to fund another property purchase or cover other costs.
• They want to switch structures — for example moving from a personal-name mortgage to a limited company one.
• They want to improve cashflow — a lower rate or extended term can materially increase net rental yield.

Unlike a residential remortgage, a BTL remortgage doesn't look at your salary first. It looks at the rent. More specifically, it looks at whether the rent will cover the mortgage payment with enough margin, measured by the Interest Coverage Ratio (ICR).

When to Start the BTL Remortgage Process

Timing is everything with a BTL remortgage. Here's the recommended timeline:

When	What you should be doing
6 months before deal ends	Speak to a broker, review your portfolio, gather documents
4 months before	Submit the Agreement in Principle (AIP) — rates can be secured
3 months before	Full application, valuation booked
2 months before	Mortgage offer issued, solicitor instructed
1 month before	Completion arranged to coincide with deal end

Crucially, most BTL lenders will let you secure a rate up to six months ahead of completion, and will let you switch to a lower rate if one emerges before completion. There's rarely a downside to starting early — only to starting late.

BTL Lender Criteria: What's Actually Assessed

BTL underwriters look at several factors beyond the ICR stress test:

The property — Type (flat, house, HMO, multi-unit), construction (standard brick vs non-standard), tenure (freehold vs leasehold, remaining lease term), location and condition all matter. Ex-local-authority flats, deck-access blocks, properties above commercial premises, and short-lease flats are all "quirks" that narrow the lender pool.

The tenancy — Is it a standard Assured Shorthold Tenancy (AST)? Is it let to a company? Is it a student HMO, DSS/LHA tenants, or an Airbnb-style short let? Each variation changes which lenders will consider the case.

Your profile — Personal income (most lenders want £25k+), age (many lenders cap at 75 or 85 at end of term), credit history, residency status (UK resident vs expat) and the number of BTLs you own.

The portfolio — If you already own four or more mortgaged BTLs, PRA rules kick in and you'll be assessed as a "portfolio landlord", with stress tests applied across your whole portfolio, not just this property.

Rates You Can Expect in 2026

BTL rates have softened through 2025 and into 2026 as swap rates have eased, but they remain above residential rates. Typical market ranges (indicative — always confirm with a broker):

Product	LTV	Indicative rate
2-yr fix, personal name	60%	4.20%-4.80%
5-yr fix, personal name	75%	4.40%-5.20%
5-yr fix, limited company SPV	75%	4.60%-5.50%
5-yr fix, HMO	75%	5.30%-6.00%
Tracker, personal name	75%	BoE + 0.75%-1.50%

Product fees are a crucial part of the total cost — some of the cheapest headline rates carry fees of 3%-5% of the loan, which often works out more expensive than a higher-rate product with a £999 fee. A good broker will run the "true cost" over the product period so you compare apples to apples.

Product Transfer vs Full Remortgage

When your deal ends, you have two choices: stay with your current lender on a new rate (product transfer), or move to a new lender (full remortgage).

Product transfer advantages:

• No new affordability or ICR assessment in most cases.
• No legal fees or valuation fees.
• Completes in days rather than weeks.
• Useful if your circumstances have worsened (drop in rent, credit issues, lower personal income).

Full remortgage advantages:

• Often meaningfully lower rates than the existing lender's product transfer range.
• Ability to raise additional capital (equity release).
• Chance to switch product type (e.g. interest-only to part-and-part, or variable to fix).

Rule of thumb: if you can pass underwriting comfortably, a full remortgage usually wins on cost. If your rent has dropped or your income has changed materially, a product transfer may be the safer route. A broker can price both options side-by-side.

Why Landlords Use a Specialist Broker

The vast majority of BTL deals — especially limited company, HMO, multi-unit and portfolio deals — are only available through intermediaries. High street direct rates are almost always beaten by specialist lenders who don't market to consumers.

A good BTL broker will:

• Match your case to lenders who fit your property type, ownership structure and rental profile, avoiding wasted applications.
• Run the ICR and stress-test maths for you before you submit, so there are no nasty surprises at valuation.
• Package your application professionally — particularly important for portfolio landlord cases where the schedule must balance to the penny.
• Negotiate on fees and rates where possible, especially with specialist lenders who operate case-by-case.
• Advise on structural decisions (personal name vs SPV, fix length, capital raise amount) with tax and rate implications in mind.
• Coordinate with your accountant and solicitor so documents, CGT considerations and source-of-funds declarations all line up.

Most BTL-focused brokers charge a broker fee of £495-£995 per case, but many offset this against procuration fees paid by the lender. Always ask upfront what the total fee structure looks like.

Common Mistakes First-Time BTL Remortgagers Make

First-time BTL remortgagers tend to repeat the same errors. Avoiding these can save thousands over a single deal period:

Going direct to their residential lender — Residential lenders rarely offer competitive BTL rates and their underwriting is often inflexible on rental-cover edge cases. The specialist BTL market is where the sharper products live.

Underestimating arrangement fees — A "cheap" 4.19% rate with a 5% arrangement fee is almost always more expensive than a 4.59% rate with a £999 fee once you crunch the numbers over the product term.

Ignoring EPC requirements — Lenders are increasingly pricing for EPC risk, with some already offering discounts for C-rated properties and refusing F/G ratings outright. Budget for insulation, double glazing and efficient heating upgrades.

Not modelling the product transfer alternative — If your current lender offers a product transfer, it's often a no-fee, no-underwriting path. Always compare it against a full remortgage before committing.

Forgetting the portfolio stress test — Landlords with 4+ mortgaged BTLs sometimes get caught out when a new lender runs their entire portfolio through a stress test. One underperforming property can fail the whole case. Audit your full portfolio's aggregate ICR annually.

BTL Remortgage FAQs Brokers Answer Daily

Beyond the formal FAQ section below, there are a handful of questions we're asked every week that don't always have a textbook answer:

"Should I remortgage early to lock in a 5-year fix?" The answer depends on your current ERC, the gap between your current rate and the new rate, and your view on where rates go next. When 5-year swaps are close to their cycle low and your ERC is modest, locking 5 years of certainty often wins on a risk-adjusted basis.

"Can I remortgage if my tenant is on benefits?" Yes — many specialist lenders (Kent Reliance, Precise, Together) accept DSS/LHA/Universal Credit tenants. A few mainstream lenders still exclude them. A broker will know which panel to target.

"What if the property has been let to family?" Most BTL lenders exclude "family arrangements" — where the tenant is a family member. Specialist lenders (Family Building Society, The Hanley) have dedicated family BTL products.

"Can I remortgage a short-let or Airbnb property?" A growing number of lenders (Landbay, Foundation, Paragon, InterBay) now offer short-let BTL products, though rates are typically 0.3%-0.8% above standard BTL. Evidence of income via platform statements is essential.

"Is it worth paying for a broker if I can find rates online?" Online comparison rates are almost always direct-only rates. The intermediary market typically saves 0.15%-0.30% on identical products, easily covering any broker fee.