Will Writing for Landlords UK: Buy-to-Let, Tax & Succession
If you own even one rental property, your will is not a standard will. A rental portfolio is a living business — tenants have statutory rights, mortgages demand monthly payments, and HMRC keeps counting. This guide walks UK landlords through the specific will-writing decisions that matter, based on England & Wales law as of April 2026.
The four things every landlord will must cover
- Who becomes landlord (and inherits the property) after your death
- Who has authority to keep the tenancy running during probate (your executor)
- Whether the property will be kept, sold, or transferred at valuation
- How IHT on the portfolio is funded without forcing a fire-sale
How a rental property passes on death
Rental property is owned under one of two structures: sole name, joint tenants (automatic survivorship to the co-owner), or tenants in common (each owner holds a defined share that passes under their will). Landlords who are married or in a civil partnership often hold the family home as joint tenants but the BTL portfolio as tenants in common, so each spouse can leave their share to children or into a trust without forcing the surviving spouse to sell.
Until probate is granted, your executor is the legal landlord. They must continue to comply with every landlord obligation: deposit protection, gas safety (CP12) certificates, EPCs, electrical safety (EICR), right-to-rent checks, and licensing (selective, HMO, additional). Failure exposes the estate to fines — so your executor must be competent or willing to hire a managing agent.
Inheritance tax on a rental portfolio
Rental property is an investment asset, not a trading business. That means it does not qualify for business relief, which otherwise removes 50% or 100% of a qualifying asset from IHT. Combined with rising property values over the last 20 years, many medium-sized landlords find their estates substantially above the IHT threshold.
The standard IHT allowances apply: £325,000 nil-rate band per person, plus up to £175,000 residence nil-rate band (only for your main home passing to direct descendants). Portfolios above this are taxed at 40%. A common trap: the residence nil-rate band tapers away £1 for every £2 above a £2m estate, so high-value portfolios quickly lose it entirely. See our IHT basics guide for the mechanics.
IHT is due within six months of death. If the estate is mostly property, executors often need to either sell quickly, take out an executor's loan, or instalment the tax (HMRC allows IHT on land to be paid over 10 annual instalments, with interest). Build this into your plan by making sure your executor knows where the liquidity will come from.
Tenant protections your executor must maintain
An AST continues as if nothing had happened. Tenants keep their section 21 and section 8 protections, the deposit remains in the scheme, and the executor cannot evict on grounds of the landlord's death. If you intend for the property to be sold to clear IHT, your executor can serve a standard section 21 notice (subject to the usual deposit/EPC/gas compliance), but the tenant keeps at least two months' notice.
If you use a managing agent, include contact details in your Household Handover Binder. If you self-manage, note the process clearly — otherwise tenants may be unable to reach anyone for weeks after your death, which damages the property and your estate.
Choosing the right executor for a landlord estate
A spouse who has never dealt with tenancies may find a multi-property estate overwhelming. Consider appointing a co-executor with property experience (an adult child, a trusted letting agent as professional executor, or your accountant). Your will can authorise executors to continue letting the properties, borrow against them if needed, and delegate day-to-day management to a regulated agent. A well-drafted executor's power clause is standard in our Single Will Kit.
Common landlord will mistakes
- ⚠Leaving property to multiple children as tenants in common with no operating agreement. Disputes over whether to sell, let, or refurbish are the single biggest source of post-death landlord litigation.
- ⚠Not updating the will after new property purchases. A will drafted when you owned one flat will not contain adequate powers for a 12-property portfolio.
- ⚠Missing life insurance in trust. Life insurance that pays into your estate increases the IHT bill. Writing it in trust means the proceeds bypass the estate and can be used immediately to pay IHT — commonly called an “IHT liquidity policy”.
- ⚠Appointing executors who live abroad. Non-UK-resident executors face practical hurdles with UK banks, land registry, and HMRC. Appoint at least one UK-resident co-executor.
- ⚠Not keeping a portfolio inventory. Executors must identify every property, mortgage, tenancy, deposit, and compliance certificate. A single missed gas certificate after your death is still a compliance failure chargeable against the estate.
When to get specialist advice
WillSafe UK's templates are designed for landlords whose estates are straightforward — a handful of BTLs, mortgages current, everything in sole or joint names. If you have any of the following, pay a STEP (Society of Trust and Estate Practitioners) solicitor to draft the will and an accountant to review the IHT position:
- •Portfolios over £2m (residence nil-rate band taper territory)
- •Holdings in a limited company (SPV) or LLP
- •Overseas rental property (separate jurisdiction wills may be needed)
- •Business relief claims on a trading property business (e.g. serviced accommodation or HMOs structured as a business)
- •Potential life interest trusts for a surviving spouse with children from a previous relationship
Frequently asked questions
What happens to a buy-to-let property when the landlord dies?+
The property forms part of the landlord's estate. Until probate (or letters of administration) is granted, the executor — not the beneficiary — becomes responsible for managing the tenancy, collecting rent, and paying expenses. Rental income during the administration period is taxed to the estate. Once probate is granted, legal title can be transferred to the named beneficiary or the property sold.
Do tenants have to leave when a landlord dies?+
No. The tenancy continues on exactly the same terms. An assured shorthold tenancy (AST) is not terminated by the landlord's death. The landlord's executor steps into the landlord's shoes and inherits the obligations (deposit protection, gas safety, EPC, How to Rent guide, licensing) as well as the right to rent. The beneficiary inherits the property subject to the tenancy.
Is a buy-to-let property subject to inheritance tax?+
Yes. Buy-to-let properties are fully within the estate for IHT purposes. Unlike trading businesses (which may qualify for 100% business relief), rental portfolios are treated as investment assets and get no relief. Portfolios worth above the combined nil-rate band (£325k + up to £175k residence nil-rate band, so up to £500k per person) will be taxed at 40% on the excess. Couples can combine allowances up to £1m.
Can I leave a rental property in joint names to avoid probate?+
If the property is held as joint tenants (not tenants in common), it passes by survivorship to the co-owner outside the will and, in simple cases, outside probate. However, the value is still in the estate for IHT. Many landlords hold BTLs as tenants in common for flexibility — this lets each owner leave their share by will (often to children) while the spouse retains their share.
Should I put my buy-to-let in a company?+
A limited company (SPV) structure can help with income tax (corporation tax at 25% vs. personal tax up to 45%) and mortgage interest deductibility, but has other costs. For inheritance, shares in the company pass under your will just like any other asset. Shares in a pure investment property company do not qualify for business relief, so there is no IHT saving. Take specialist tax advice before restructuring — this is outside WillSafe UK's scope.
How do I protect my portfolio from void periods during probate?+
Typical probate takes 6–12 months. Make sure your executor has: (1) a list of all properties, mortgages, and lenders; (2) access to your tenancy management system or managing agent contact; (3) authority under the will to continue letting, borrow short-term if needed, and sell properties. Keep a landlord handover file with insurance, EPCs, and deposit scheme details — our Household Handover Binder is designed for this.
What happens to the mortgage when I die?+
Mortgages do not vanish on death. The executor must keep payments current from rental income or estate funds. If a beneficiary inherits a mortgaged property, they typically need to refinance in their own name — lenders will not automatically transfer the existing deal. Life insurance written in trust (not through the will) is the common way to clear portfolio debt on death — speak to a regulated financial adviser.
Protect your portfolio in under an hour
Our Single Will Kit includes wide executor powers designed for landlords. Add the Household Handover Binder so your executor has every compliance certificate, tenancy, and mortgage in one place.
This guide is general information, not legal or tax advice. WillSafe UK is not a firm of solicitors and does not provide advice tailored to your circumstances. Landlords with complex portfolios should consult a STEP solicitor and a qualified accountant.