Property SPV Accountant UK: Running a Buy-to-Let Ltd Company Properly

More landlords are holding buy-to-let properties through Special Purpose Vehicles (SPVs) — Ltd companies set up specifically to hold property — to retain full mortgage interest relief and manage inheritance tax exposure. But an SPV isn't a set-and-forget structure. Here's what running one properly actually involves.

Why Landlords Use SPVs

Since Section 24 restrictions came in, individual landlords can no longer deduct mortgage interest as a business expense — they get a 20% tax credit instead. Higher-rate taxpayers saw their effective tax rate on rental income jump significantly. A Ltd company (SPV) is not subject to Section 24 — it deducts mortgage interest in full before paying Corporation Tax at 19–25%. For higher-rate taxpayers with leveraged portfolios, the difference is substantial — often worth thousands per property per year.

The catch: money inside a Ltd company is not yours until you extract it as salary or dividends, which creates its own tax layer. The net advantage depends on your personal tax position, how much income you need to draw, and whether you're building a portfolio for long-term wealth rather than immediate income.

What an SPV Accountant Needs to Handle

Annual statutory accounts and CT600

Every Ltd company must file annual accounts at Companies House and a Corporation Tax return with HMRC. For an SPV these must show rental income, allowable expenses (mortgage interest, repairs, management fees, insurance), and the resulting taxable profit. Simple in principle — but expense categorisation matters, and errors create HMRC exposure.

Director's loan account

This is where most SPV owners get into trouble. If you pay personal expenses from the company account, or transfer money in and out informally, you're creating movements on the Director's Loan Account (DLA). An overdrawn DLA creates a Corporation Tax charge under S455 — 33.75% of the overdrawn balance, charged to the company. Your accountant needs to track every movement on the DLA and flag when it's approaching territory that creates a charge.

Capital expenditure vs repairs

HMRC distinguishes between capital expenditure (improvements that enhance property value, not deductible against rental income but reduce a future CGT bill) and repairs (maintaining the property in its existing condition, fully deductible). Getting this wrong either costs you tax relief on repairs or creates a problem on disposal. An SPV accountant reviews capital spend carefully.

Dividend extraction strategy

When you want to take money out of the SPV, the timing and amount of dividend payments should be planned — ideally at the start of the tax year. Using both your personal dividend allowance and your spouse's (if they're a shareholder) maximises what you can extract tax-efficiently each year.

Common Mistakes When Landlords DIY Their SPV Accounts

• Treating the SPV bank account as a personal account — paying personal costs through it and not tracking the DLA
• Missing the S455 charge because the overdrawn DLA isn't spotted until after the CT return deadline
• Coding capital expenditure as repairs (or vice versa) — creates problems at disposal
• Not extracting dividends tax-efficiently — leaving money in the company when it could be extracted within the basic rate band
• Filing accounts late — Companies House penalties are small but cumulative, and late filings affect your credit profile

When Does a Property SPV Make Sense?

It makes sense if: you're a higher-rate taxpayer with leveraged property, you're building a portfolio for long-term wealth accumulation rather than current income, and you're comfortable with the additional administration and accountancy cost.

It's more complicated if: you need to draw the income now (extraction tax reduces the advantage), you have an existing personal portfolio you'd need to transfer (SDLT and CGT on transfer can be prohibitive), or you're selling properties regularly (Corp Tax on gains plus income tax on extraction can sometimes exceed personal CGT rates).