BTL landlords, 2026 · Snapshot 20 April 2026

Your BTL margin is being squeezed. See the figure.

Two-year fixed averages 5.42%1 while London rents are forecast to rise ~2% in 20262. The gap is your margin — and this is what it looks like on paper.

Enter five numbers. We’ll show you current net profit, margin %, and an indicative Hybrid-Let comparison. No account. Indicative only — actual figures depend on property, tenant profile, and survey.

BTL Margin Squeeze Calculator

See what a 5.42% fixed rate really leaves on the table

Enter your numbers. We show your current 12-month net and an indicative Hybrid-Let comparison. Indicative only — actual figures depend on property, tenant profile, and survey.

Current annual net profit

£4,015

Net margin

13.9%

If rates hold — 12-month projection

£4,015

Mortgage interest: £18,970 · voids: £2,215

Hybrid-Let uplift line — indicative

Indicative annual net

£4,015

Indicative delta vs BTL

+£0

After 20% management

20% flat

Indicative; subject to survey & asset review. Not a guaranteed quote. Actual figures depend on property, tenant profile, and survey. Numbers above assume a modest +25% effective-gross uplift versus your BTL baseline, net of a 20% flat management fee — we do not claim this uplift for every property.

Subject to survey, credit and asset checks. Rent only guaranteed under our guaranteed-rent product (full terms on request).

What’s eating your margin

Three lines on the P&L

LineWhat’s happening in 2026
Mortgage costTwo-year fixed averages 5.42% (19 April 2026), up from ~4.25% before the latest rate shock — adding roughly £235/month to a typical new mortgage.1
VoidsRightmove's 2026 London rent forecast sits at ~2% growth; every void week erases roughly 2% of annual gross, so a 4-week void sequence eats the whole year's rent growth.2
Compliance costRenters' Rights Act 2025 Phase 1 (1 May 2026) introduces a civil penalty ladder up to £7,000 per first breach and £40,000 for continuing offences, plus a new Information Sheet service rule by 31 May.3

Side-by-side

BTL status quo vs managed Hybrid-Let

All figures below are indicative only and not a quote. A real answer comes from a 20-minute asset review and, where relevant, a guaranteed-rent survey.

BTL status quo

Assured periodic long-let

  • Mortgage interest at current fixed rate (indicative 5.42%)1
  • Rent growth tracks ~2% p.a.2
  • Void weeks eat into effective gross
  • Full RRA Phase 1 compliance workload sits with you3
  • Agency fee typically 8–12% of rent, compliance often billed on top

Managed Hybrid-Let (indicative)

Mid-term + medical-stay mix, managed

  • Indicative effective-gross uplift vs long-let baseline — subject to survey & asset review
  • 20% flat management fee, all-inclusive (no onboarding, no clawback)
  • Compliance workload absorbed by manager (RRA paperwork, certificates, Information Sheet service)
  • Guaranteed-rent product available as an alternative: fixed monthly sum, 2–3 year term
  • Indicative only — actual figures depend on property, tenant profile, and survey

Subject to survey, credit and asset checks. Rent only guaranteed under our guaranteed-rent product (full terms on request).

Questions, answered

Frequently asked questions

How does the Renters' Rights Act Phase 1 affect my BTL numbers from 1 May 2026?

From 1 May 2026 every existing assured shorthold auto-converts to an assured periodic tenancy. Section 21 ends, rent increases run through Form 4A (once per year, 2 months' notice), and a civil penalty ladder up to £7,000 for a first breach and £40,000 for continuing offences applies. This does not mean you are exempt from RRA under a Hybrid-Let structure — it means the compliance workload either sits with you or with your manager, and our fee model absorbs that work rather than invoicing for it. Sources in the footnote block below.

What does 'guaranteed rent' actually mean here?

Guaranteed rent is a separate product under which we contract to pay a fixed monthly sum for a 2–3 year term, regardless of occupancy, after a survey and asset review. It is not the same as our standard management service. Subject to survey, credit and asset checks. Rent only guaranteed under our guaranteed-rent product (full terms on request).

How is the indicative Hybrid-Let uplift calculated?

The calculator assumes a modest +25% uplift on your effective gross (after voids) versus the long-let baseline, then deducts our 20% flat management fee, your mortgage interest, and your maintenance/insurance/agency costs. This is a conservative indicative figure only — actual uplift depends on the specific asset, location, layout, and the mid-term / medical-stay demand pattern for your postcode. We will not quote a specific uplift for your property without a survey.

Why run this calculation now?

Two reasons. First, the two-year fixed BTL spread has repriced upward in recent weeks while Rightmove is forecasting just ~2% London rent growth for 2026 — the gap between financing cost and rent growth is the margin you are trying to protect. Second, RRA Phase 1 lands in under two weeks; landlords who are going to change operating model typically do it either side of a mortgage refix or a compliance milestone, and both are converging now.

Next step

Want a written breakdown for your specific flat?

Book a 20-minute review. We’ll walk the BTL numbers, the indicative Hybrid-Let comparison, and if it suits, a guaranteed-rent survey.

Indicative estimate only. Real quote after a 20-minute property review. Snapshot dated 20 April 2026.

Sources

  1. 1 Two-year fixed average 5.42% as at 19 April 2026 — Uswitch — UK mortgage rates today, 19 April 2026.
  2. 2 London rent growth forecast ~2% for 2026 — Rightmove UK House Price Index, April 2026; see also Letting Agent Today — Rightmove 2026 rent forecast; ONS private rent index reference: ONS — Private rent and house prices, UK.
  3. 3 Renters’ Rights Act 2025 Phase 1 commences 1 May 2026; civil penalty ladder up to £7,000 / £40,000 — GOV.UK — civil penalties under the Renters’ Rights Act 2025; Information Sheet service rule — GOV.UK — Renters’ Rights Act Information Sheet 2026.

All calculator outputs are indicative only — actual figures depend on property, tenant profile, and survey. Big Ben Suite does not exempt owners from RRA Phase 1 obligations; the Hybrid-Let model reallocates the compliance workload to the manager but statutory duties remain the landlord’s.