Inheritance Tax Planning for Property Portfolios

# Inheritance Tax Planning for Property Portfolios

IHT is the tax that landlords most often forget — and pay most heavily for. A leveraged portfolio sounds modest in equity terms but the full property values count toward the estate. Planning works, but only if started years before it is needed.

How IHT works

• Nil-rate band: £325,000 per person.
• Residence Nil-Rate Band (RNRB): £175,000 per person — but only for a main residence passing to direct descendants. RNRB tapers at £2m estate, lost entirely at £2.35m.
• Spouse exemption: assets pass between spouses IHT-free, and the surviving spouse inherits the deceased''s unused nil-rate bands.
• Rate: 40% on estate value above available nil-rate bands.

A married couple can shelter up to £1m if the property passing to children includes their main residence and the estate is under £2m.

Why portfolios are hit hard

A portfolio worth £2m gross but with £1m of mortgages has £1m of equity. But IHT applies to the net estate after deducting the mortgages (which is liabilities on the property). However, the gross value still pushes total estate over the £2m taper threshold, eroding the Residence Nil-Rate Band.

Worked example: married couple, main home £600k, 4 BTLs worth £1.2m, mortgages £700k, other assets £300k.

• Net estate: £600 + £1,200 – £700 + £300 = £1,400k.
• Gross estate (for RNRB taper): £2,100k → RNRB tapered: lost £50k (£1 for every £2 over £2m).
• Available NRB: 2 × £325k + 2 × (£175k – £25k taper) = £950k.
• Taxable: £1,400 – £950 = £450k.
• IHT at 40% = £180,000.

That bill must be paid before probate — often forcing distress sales.

What does NOT work

• Buy-to-let does not qualify for Business Property Relief (BPR). Despite being a "business" colloquially, residential letting is investment, not trading. No 100% IHT relief.
• Furnished Holiday Lets — historically a grey area; HMRC now firmly treats most FHLs as investment, no BPR. The abolition of the FHL regime in April 2025 finalises this.
• Owning through a personal company — does not by itself reduce IHT; company shares are estate assets.

What does work

1. Lifetime gifts

Outright gifts to individuals are Potentially Exempt Transfers (PETs) — IHT-free if the donor survives 7 years. Taper relief reduces IHT on death within 3–7 years.

• Annual gift allowance: £3,000 per person.
• Small gifts: £250 per recipient.
• Wedding gifts: £5,000 to a child, £2,500 to a grandchild.
• Gifts out of normal expenditure from income — fully exempt if regular and not affecting standard of living.

Caveat: gifting an income-producing asset like a BTL but continuing to receive rent is a Gift with Reservation of Benefit — it stays in the estate.

2. Trusts

Putting property into a discretionary trust during your lifetime:

• Chargeable Lifetime Transfer — 20% immediate IHT on amounts over the nil-rate band.
• 10-year periodic charges (max 6%).
• Exit charges on capital leaving the trust.
• BUT — removes future growth from the estate.

Specialist territory; specialist advice essential.

3. Life assurance into trust

A whole-of-life policy with sum assured equal to expected IHT, written in trust, pays out outside the estate. The trust pays the IHT bill, the heirs receive the property intact.

• Premiums often £200–£600/month for a healthy 50-year-old on £200k cover.
• Premiums themselves can be paid out of normal expenditure (exempt).
• Cheapest and simplest IHT mitigation for many landlords.

4. Family Investment Companies (FICs)

A limited company holding investments (including property), with different share classes for different family members:

• Founders hold voting/freezer shares.
• Children hold growth shares.
• Future growth accrues to children outside the founder''s estate.
• Income can be allocated flexibly.
• No CLT on funding (loans, not gifts).

Worth considering for portfolios over ~£1.5m. Cost to set up: £5–£15k plus ongoing.

5. Spousal planning

• Equalise estates to use both nil-rate bands.
• Wills written to maximise both spouses'' RNRBs.
• Consider transferring shares to a non-domiciled spouse only with specialist advice (rules changed April 2025).

6. Exit planning

• Sell BTLs gradually over years to manage CGT and reduce estate.
• Pay down mortgages aggressively in later years — reduces equity exposure (but does not reduce gross estate for RNRB taper).
• Move equity into pension wrappers (within annual allowance) — pensions are outside the estate.

CGT vs IHT interaction

Gifting property triggers CGT at market value — payable at 24%. Holding until death wipes the CGT slate clean for heirs (uplift to probate value). So holding can save CGT but cost IHT; gifting can save IHT but trigger CGT now.

The right answer depends on growth expectations, holding period, and tax bands.

Mortgages and IHT

• Property values are gross.
• Mortgages are estate liabilities (deductible from net estate value).
• Endowment / interest-only debt can leave the estate exposed if not paired with savings or life cover.

Always have a "repayment vehicle" for interest-only BTL — sale, savings, or assurance.

Practical playbook

1. Calculate your IHT liability today — net estate × 40% after nil-rate bands.
2. Use annual gift allowances every year — £3k each per spouse.
3. Set up assurance into trust — covers the gap while other planning works.
4. Equalise estates between spouses.
5. Consider FIC if portfolio £1.5m+.
6. Make a will (and review every 3 years and on every major event).
7. Get specialist STEP-qualified advice — IHT is unforgiving.

Common mistakes

• Assuming BTL gets Business Property Relief.
• Gifting property but continuing to receive rent (GROB rule).
• Leaving IHT planning to the year before death — most reliefs need 7 years.
• Funding life cover but not putting it in trust.
• Forgetting that the RNRB tapers above £2m.
• Mixing personal and rental in confused estate planning.

Bottom line

IHT on a portfolio is a planning problem, not a tax inevitability. Start with the annual gift allowances and life cover in trust; review the FIC option for larger portfolios; pair with a clear will. Done early, IHT is largely optional. Done late, it can force liquidation of the very portfolio you built.