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Think Tank Proposes National Insurance for Landlords

A think tank s proposal could make landlords pay National Insurance on rental income, potentially raising £3.2 billion annually.

By David Sampson
3 June 2026
2 min read
UK buy to let mortgage article image for Think Tank Proposes National Insurance for Landlords

TL;DR

  • A think tank suggests making landlords pay National Insurance on rental income.
  • this could generate £3.2 billion annually, impacting landlords and tenants alike.

Written by David Sampson for Mortgage118. Last updated 3 June 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

The New Economics Foundation (NEF) has proposed that landlords should be required to pay National Insurance contributions on their rental income. This move could potentially raise an estimated £3.2 billion annually, which would have significant implications for the buy-to-let sector and the broader housing market.

What are the proposed changes for landlords?

The NEF’s report advocates for the inclusion of rental income in the National Insurance framework. This would mean that landlords would be subject to additional taxation on their earnings from rental properties. To balance the financial impact on landlords, the NEF has suggested reintroducing mortgage interest relief, a benefit that was removed by former Chancellor George Osborne. This relief could help offset the costs associated with the new tax obligations.

How will this affect the housing market?

If implemented, these changes could lead to increased costs for landlords, which may ultimately be passed on to tenants through higher rents. This could exacerbate the affordability crisis in the rental market, particularly in areas where demand for rental properties is already high. Moreover, the potential for increased taxation might deter new investors from entering the buy-to-let market, impacting overall housing supply.

What this means for landlords and investors

Landlords should prepare for possible changes to their financial obligations. The introduction of National Insurance on rental income would require careful financial planning to ensure compliance and profitability. Investors in the buy-to-let market may need to reassess their strategies, especially if mortgage interest relief is not reinstated. It is essential for landlords and investors to stay informed about these developments and consider how they might adjust their portfolios in response.

Frequently asked questions

Will all landlords be affected by this proposal?

Yes, if implemented, all landlords earning rental income would be subject to National Insurance contributions, impacting their overall profitability.

What should landlords do in response to these changes?

Landlords should review their financial strategies and consider the potential impact on their rental income and expenses, particularly regarding tax obligations.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.