Retained Profits in a Property Company: How the Tax Advantages Actually Work

The simplest way to describe retained profits is this: profit that the company has earned, paid corporation tax on, and chosen not to pay out. It stays on the balance sheet as reserves and belongs to the shareholders, but it has not yet been handed to them. The tax appeal is narrow but real. While that profit stays inside the company it has been taxed once, to corporation tax, and the second layer of tax (the dividend tax you pay personally on extraction) is parked until you decide to take the money. For a higher-rate landlord building a portfolio, that parked tax is capital you can put to work now instead of giving to HMRC now.

What it is not is a way to make tax disappear. The dividend tax is deferred, not cancelled, and the rules around close companies, directors' loans and winding-up all exist to stop the deferral becoming an avoidance. The advantage is genuine for the right landlord and overstated for the wrong one. This guide sets out where the line falls, with the 2026/27 numbers and the changes landing in April 2027.

Why retained profit is taxed once and personal extraction is taxed twice

A property company pays corporation tax on its rental profit and on any chargeable gains. For 2026/27 the rates are 19% on profits up to £50,000 (the small profits rate), 25% on profits above £250,000 (the main rate), and an effective 26.5% on the slice that falls in the £50,000 to £250,000 marginal-relief band. Those limits are divided where you control associated companies, so a landlord running several SPVs shares one set of limits between them.

Once that corporation tax is paid, the remaining profit is yours as a shareholder, but only once you extract it. Extraction as a dividend triggers a second, personal layer of tax. For 2026/27 the dividend rates are 10.75% for basic-rate, 35.75% for higher-rate and 39.35% for additional-rate shareholders, after a £500 dividend allowance. So a higher-rate landlord who takes profit out faces corporation tax and then dividend tax on what is left. A landlord who retains the profit faces only the corporation tax until a later extraction year. That gap, and your ability to choose the year you close it, is the whole strategy.

One caveat decides whether the lower corporation tax rates are even available to you. A close investment-holding company under CTA 2010 s.18N is denied the small profits rate and pays 25% on all profit regardless of size. Pure-investment vehicles holding shares, cash or property let to connected parties are caught. A standard buy-to-let company letting to unconnected tenants is generally not caught, because letting land to unconnected tenants is a qualifying purpose under the s.18N carve-out. Build a retention projection on the 19% rate when the company is actually a CIHC paying 25%, and the advantage you have modelled is roughly a third too large.

Retain or extract: a side-by-side comparison for 2026/27

The decision is rarely all-or-nothing, but the two ends of the spectrum make the mechanics clear. Take a higher-rate shareholder and £50,000 of company rental profit.

Step	Extract immediately as dividend	Retain in the company
Pre-tax profit	£50,000	£50,000
Corporation tax (19% small profits rate)	£9,500	£9,500
Profit after corporation tax	£40,500	£40,500
Dividend tax on extraction (35.75% higher rate, ignoring the £500 allowance)	about £14,479	£0 this year (deferred)
Cash in your pocket / working in the company now	about £26,021 personally	£40,500 reinvested in the company
Tax still owed later	None	Dividend tax on eventual extraction

Read the table for what it does and does not show. Retention does not save the £14,479 of dividend tax; it postpones it. What it does is keep around £14,479 more capital working inside the company in the meantime, which is the engine behind the compounding argument below. If you genuinely need the £26,021 to live on, the comparison is moot. If you do not, you are choosing between £40,500 reinvested today and £26,021 reinvested today, and the difference compounds.

The basic-rate position is much weaker. A basic-rate shareholder's dividend rate is only 10.75%, so the second layer of tax they defer is small, and the case for tying money up in the company for years is correspondingly thin. Retention is a higher-and-additional-rate strategy.

How reinvested retained profit compounds the portfolio

The reinvestment advantage is easiest to see over several years. Suppose a company nets £40,500 after corporation tax and reinvests all of it into deposits and refurbishment that grow rental income and asset value. A higher-rate landlord doing the same thing personally, having paid dividend tax to release the cash, starts each year with roughly £26,000 to reinvest instead. Over a five to ten year horizon, deploying the larger figure every year produces a materially larger portfolio, because each year's growth builds on a bigger base.

That is the real mechanism, and it is worth stating precisely rather than reaching for vague language about wealth-building. You are not earning a higher return inside the company; you are reinvesting a larger principal because the personal tax has not yet been taken out of it. The eventual dividend tax bill grows alongside the portfolio, so the benefit is the time value of deferral plus the compounding on the deferred amount, not a permanent escape.

Where retained profit actually goes

Retained cash is most useful when it has a job. Common deployments are:

• Deposits for the next acquisition, so the portfolio grows without a fresh injection of personal funds.
• Refurbishment and improvement works that lift rent and capital value.
• Reducing borrowing on existing properties to cut interest cost and improve loan-to-value for refinancing.
• Qualifying plant and machinery, where capital allowances may reduce the company's taxable profit in the year of spend.
• A cash reserve for opportunities, voids and unexpected repairs.

Idle cash piling up with no plan is the weakest use of retention, because it carries the deferred dividend-tax liability without earning the compounding that justifies it. If the company is not reinvesting, the question of whether to extract becomes much more finely balanced.

How the April 2027 personal rates widen the gap

From 6 April 2027, Finance Act 2026 c.11 s.7 (which received Royal Assent on 18 March 2026) introduces separate property income tax rates for individual landlords: 22% at basic rate, 42% at higher rate and 47% at additional rate. These apply in England, Wales and Northern Ireland. Scotland is carved out for 2027/28 and continues to set its own non-savings, non-dividend rates through the Scottish rate-setting process. The Section 24 finance-cost reducer rises in step to 22%, so geared landlords do not face a new basic-rate wedge on their mortgage interest.

The point for retention planning is straightforward. A company pays corporation tax on rental profit and is untouched by the new personal rates. An individual higher-rate landlord will pay 42% on rental profit from April 2027 rather than 40%. So the gap between the corporate rate and the personal rate on the same rental profit widens for higher and additional rate earners, which strengthens the case for holding profit inside a company and reinvesting it. For a fuller treatment of the new rates, see our guide to the 2027 property income tax rates for landlords.

Capital gains: companies pay corporation tax, not CGT

When a property is sold, the route matters. A company does not pay Capital Gains Tax. Its chargeable gain is added to its profits and taxed to corporation tax at the company's rate (19% to 25% for 2026/27), and the company can still claim indexation allowance frozen at December 2017 on base cost held since before 2018. An individual selling residential property pays CGT under TCGA 1992 s.1H at 18% on the part of the gain falling within any unused basic-rate band and 24% above it, after the £3,000 annual exempt amount. Companies have no annual exempt amount.

Feature	Individual landlord	Property company
Tax on a gain	CGT at 18% / 24% (TCGA 1992 s.1H)	Corporation tax at 19% to 25%
Annual exempt amount	£3,000 per person (2026/27)	None
Indexation on pre-2018 cost	Not available	Available, frozen at December 2017
Reporting	60-day CGT on UK property return	Corporation tax return (CT600)
Getting the proceeds out	Already personal	Dividend tax on extraction from the company

The sting in the company column is the last row. A gain realised inside a company is taxed once to corporation tax, but the net proceeds still sit in the company, so extracting them to spend personally triggers dividend tax just like any other retained profit. That is precisely the deferral the retention strategy relies on, applied to a capital event. For the individual side in detail, see our complete guide to capital gains tax on property.

Getting money out later: extraction sequencing

Retention only makes sense if you have a plan for the eventual extraction, because that is where the deferred tax is paid. The usual order of preference is to draw any director's loan credit balance first, then dividends, then salary, then pension contributions, each with its own tax profile.

If you incorporated an existing portfolio, a Section 162 incorporation transfer often creates a sizeable director's loan credit balance: the company owes you for the value of the properties you transferred in. That balance can be drawn back tax-free in priority to dividends, which means in the early years you can fund personal needs from the loan account while leaving the trading profit retained and reinvested. The trap is exhaustion: drawing a large monthly sum against the loan can run the balance down within a few years, after which you are forced into taxable dividend or salary extraction earlier than planned. Worked sequencing matters here, and we cover it in the property SPV extraction sequence guide.

The opposite mistake is the overdrawn director's loan. If the company lends you money and the balance is unpaid nine months and one day after the company's year-end, a Section 455 charge applies at 35.75% for loans made on or after 6 April 2026, tracking the dividend upper rate in ITA 2007 s.8(2). The charge is repaid to the company when you clear the loan, but it ties up cash and creates an administrative cost, so it is a poor substitute for planned extraction. The mechanics are set out in our director's loan account mechanics guide.

Section 24, incorporation and why the advantages stack

Section 24 restricts an individual residential landlord's mortgage interest relief to a basic-rate tax reducer rather than a full deduction, which pushes geared higher-rate landlords into paying tax on profit they never really made. Companies are outside Section 24 entirely: a property company deducts mortgage interest in full against rental profit before corporation tax. So for a heavily geared higher-rate landlord, incorporation does two things at once. It removes the Section 24 penalty on interest, and it opens the door to retaining the resulting profit and deferring personal tax on it.

That stacking is why incorporation and retention are usually discussed together rather than separately. The Section 24 background is covered in our guide to claiming mortgage interest relief under Section 24, and the company-formation side, including the all-important question of whether the transfer itself triggers CGT and SDLT, in our buy-to-let limited company guide and our explainer on incorporating rental property without triggering CGT.

Reporting, MTD and the compliance picture

A useful and often missed consequence of moving a portfolio into a company is that the rental profit leaves the Making Tax Digital for Income Tax population. MTD for Income Tax Self Assessment applies to individuals (and certain trusts) with qualifying income, phased in from 6 April 2026 for income over £50,000, 6 April 2027 for income over £30,000, and 6 April 2028 for income over £20,000. A company reports through its corporation tax return and statutory accounts filed at Companies House, not through MTD for Income Tax. Any dividends or salary you draw personally still appear on your own Self Assessment return while you remain in scope, but the underlying rental profit no longer drives quarterly MTD updates.

Retained profit shows up plainly on the company's balance sheet as accumulated reserves, visible in the accounts at Companies House. That transparency is not a problem; it simply records that the company has been run tax-efficiently. The corporation tax return must reflect the profit honestly whether it is retained or distributed; retention is a decision about what to do with post-tax profit, not a way to reduce the tax on it. If you are weighing the switch from personal Self Assessment, our guide on registering for MTD as a landlord sets out the personal-side obligations that incorporation can take you out of.

Where the retention strategy breaks down

Three things most often turn a good retention plan into a poor one.

The first is needing the money. If your living costs require most of the rental profit each year, you cannot retain it, and the comparison collapses to ordinary extraction. Retention is for landlords with other income or modest personal needs.

The second is lending. Some mortgage lenders, when assessing affordability or a director's personal income, want to see a track record of profit extraction or a sustainable personal income, and a company that retains everything can present a thinner personal picture. Equally, a large retained cash or net-asset position changes how a lender reads the company. Most portfolio landlords run a balanced policy: extract enough for personal needs and lending criteria, retain the rest. Settle this with your broker before the first set of company accounts is filed.

The third is forgetting the exit. The deferred dividend tax is real and waiting. On a winding-up, distributing reserves can sometimes attract CGT rather than dividend rates, but the Transactions in Securities rules and the targeted anti-avoidance rule on phoenixism can re-characterise that as income, so a capital outcome is never automatic. Plan the whole lifecycle, accumulation and extraction together, rather than assuming the retained reserves will somehow leave the company cheaply at the end.

So is it worth retaining profit in your property company?

For a higher or additional rate landlord who does not need the rental profit to live on, has a horizon of at least five years, and intends to reinvest, retaining profit is one of the cleaner advantages of the corporate structure, and the April 2027 personal rate rise sharpens it further. For a basic-rate taxpayer, or anyone who must draw most of the profit each year, the benefit is slight and the administrative and exit complexity may not be worth it. The right answer is a retain-and-extract split tailored to your marginal rate, cash needs, lending position and growth plans, reviewed each year as those move. If you want that modelled against your actual numbers, our team can run the comparison for your portfolio.