Landlord & Property Tax · South West London
Landlord accountants in Castelnau
Owning rental property in Castelnau means a UK property return every January, mortgage interest that is no longer deductible but a 20% credit, and from April 2026 quarterly digital updates for landlords with higher rental income. We handle all of it online, reconcile every agent statement, and file once you have approved the figures. One fixed fee.
from £149 · fixed, per year
Next deadlines
- UK residential property disposals: CGT return and payment within 60 days of completion
- UK residential property disposals: CGT return and payment within 60 days of completion
- Online Self Assessment filing deadline and balancing payment due
- UK residential property disposals: CGT return and payment within 60 days of completion
Who this is for
Landlord & Property Tax for Castelnau
Residential and commercial landlords in Castelnau: accidental landlords renting a former home, buy-to-let investors with one to several mortgaged properties, portfolio landlords, joint owners and couples, owners of furnished holiday lets and serviced accommodation, overseas landlords with UK rentals, and anyone who has let a property for years without declaring it and wants to put it right.
What is included
Everything inside the fixed fee
- Rental income and expenses for each property reconciled to agent statements and bank records
- Allowable expenses claimed in full: repairs, insurance, agent fees, ground rent, service charges, replacement of domestic items
- Mortgage interest handled correctly as a 20% tax credit, not a deduction, with the restriction carried forward where it cannot be used
- Joint ownership splits, Form 17 elections and the property allowance applied where they help
- Furnished holiday lets, serviced accommodation and rent-a-room treated under the rules now in force
- UK property pages of the Self Assessment completed and filed, with Making Tax Digital readiness assessed
How it works
Landlord & Property Tax from Castelnau, step by step
Scope the job
We find out what you need filed, when it is due and what state the records are in, and tell you which fixed-fee package applies.
Agree the price
The fee is confirmed in writing. There is no hourly billing and nothing added for questions during the work.
Hand over the records
Photographs, PDFs, software access or a spreadsheet, sent however suits you. We confirm what we have and what is missing within two working days.
Approve, then we submit
You review the draft with our explanation, sign off, and we file. Receipts, copies and the next deadlines come back to you immediately.
Why IGI
The IGI way of working, in Castelnau
One fixed fee for landlord & property tax in Castelnau, agreed in writing before any work starts and never changed part-way through the job, however long it takes us.
We work to the HMRC and Companies House calendar, not an appointment diary. Clients in Castelnau get reminders at 60, 30 and 7 days before each date that applies to landlord & property tax.
We serve Castelnau remotely by design: records by WhatsApp or email, drafts back for approval, filing electronic. The saving on premises is passed to you in the fee for landlord & property tax.
Continuity matters in landlord & property tax: the person who prepared last year's work for your Castelnau business prepares this year's, and remembers what was agreed.
We explain landlord & property tax in the words Castelnau business owners use, not in accountant's shorthand, and we show our working so you can check it.
You stay in control of landlord & property tax: drafts go to Castelnau clients first, with the figures explained, and nothing leaves us until you say so.
Local facts
About Castelnau
Castelnau is in South West London, within Richmond upon Thames, in the SW13 postcode district, England. For businesses in England the tax rules are those set by the UK Parliament: the 20/40/45% income tax bands, Class 4 National Insurance for the self-employed at 6% and 2%, Corporation Tax at 19% to 25%, and Stamp Duty Land Tax on property. Business rates are set locally by the council.
| Place | Distance | Direction |
|---|---|---|
| Barnes | 0.6 mi | SW |
| Riverside, Hammersmith and Fulham | 0.7 mi | E |
| Mortlake and Barnes Common | 0.8 mi | SW |
| Chiswick Homefields | 0.8 mi | NW |
| Fulham Reach | 1.0 mi | NE |
| Ravenscourt Park | 1 mi | N |
| Palace Riverside | 1 mi | E |
| Munster | 1 mi | E |
Worth knowing
Rules that come up in this work
CIS deductions
The Construction Industry Scheme affects both sides of a construction payment. Contractors must verify subcontractors, deduct the right amount, issue statements and file monthly, with penalties from £100 for each late return. Subcontractors suffer deductions on turnover and recover the excess at the year end. Limited company subcontractors offset deductions against PAYE monthly instead.
Confirmation statements and identity verification
The confirmation statement is the annual check that the public register is right: officers, registered office, SIC codes, shareholders and the PSC register. It carries a £50 fee and no financial penalty for lateness, but failure to file leads to compulsory strike-off. The identity verification regime introduced in November 2025 has added a further check to every statement.
Corporation Tax rates and marginal relief
Companies pay Corporation Tax at 19% on profits up to £50,000 and 25% on profits over £250,000. Between those figures marginal relief applies, producing an effective rate that rises gradually and a marginal rate of 26.5% on each pound in the band. The thresholds are divided by the number of associated companies, so a director with two companies has thresholds of £25,000 and £125,000 for each.
The VAT registration threshold
Watching the rolling twelve-month turnover figure is one of the quiet jobs of monthly bookkeeping, because the £90,000 VAT threshold arrives silently. Crossing it brings quarterly returns, Making Tax Digital software and a decision about schemes. Crossing it late brings a bill for VAT you could not recover from customers and a penalty for failing to notify.
Director's loan accounts
Money taken from a company has to be something: salary, dividend, expense reimbursement or loan. If it is a loan and remains outstanding nine months after the year end, the company pays tax at the dividend higher rate on it until it is repaid. Clearing the balance with a properly declared dividend before the deadline, where reserves allow, is routine year-end work.
Salary versus dividends
Directors of their own companies usually take a salary at or just above the National Insurance thresholds, which keeps the year qualifying for State Pension and is deductible for Corporation Tax, with further income as dividends. Dividends above the £500 allowance are taxed at 10.75%, 35.75% and 39.35% by band and can only be paid from distributable profits after tax, with a minute and voucher each time.
Payments on account
A common surprise in Self Assessment is the January payment that is far larger than expected. That is the balancing payment for the year just ended plus the first payment on account for the year ahead, which HMRC sets at half of the bill just calculated. We put the figure in your hands months ahead and tell you how to adjust it legitimately when circumstances change.
Questions
Landlord & Property Tax questions from Castelnau
I live abroad and rent out a UK property. Do I still pay UK tax?
Yes. UK rental income is taxed in the UK regardless of your residence, with the personal allowance available to most non-residents. Letting agents or tenants must deduct 20% at source unless you are approved under the Non-Resident Landlord Scheme to receive rent gross. We handle the approval and the annual return.
Should I put my properties into a limited company?
Sometimes. A company deducts mortgage interest in full and pays Corporation Tax at 19% to 25%, but extracting profit costs dividend tax, mortgages are dearer and transferring existing properties triggers CGT and SDLT. It suits higher-rate taxpayers building a portfolio long term; it rarely suits one or two properties. Our tax planning review runs the numbers.
Is replacing a kitchen a repair or an improvement?
Replacing like with like, or with the modern equivalent, is a repair and deductible, even if the new kitchen is better quality because standards have risen. Adding something that was not there before, such as extending the kitchen or adding a dishwasher space, is an improvement and goes against the capital gain instead. We split mixed invoices.
What expenses can I claim?
Letting agent fees, repairs and maintenance, buildings and contents insurance, ground rent and service charges, council tax and utilities you pay, accountancy, legal fees for lets of a year or less, replacing furniture and appliances, mileage to the property, and advertising. Improvements, your own labour and the capital part of mortgage payments are not allowable.
How is mortgage interest treated now?
Since April 2020 individual landlords cannot deduct mortgage interest or other finance costs from rental profit. Instead you receive a tax reduction of 20% of the finance costs. For higher-rate taxpayers this means more tax than under the old rules, and the restriction can push rental profit into a higher band. We calculate it and carry forward any unused credit.
What is included in the £149 one-property fee?
The rental income and expenditure account for the property, a review of every expense category, the finance-cost credit calculation, the UK property pages and the rest of your Self Assessment return completed and filed with HMRC. Rental income alongside employment or a pension is the most common case and this fee covers it.
How do I get started from Castelnau?
Message us on WhatsApp or email with a sentence about your business and what you need. We reply in working hours with any questions and a fixed fee for landlord & property tax. Once you confirm, we tell you exactly which records to send and the work begins. Most Castelnau clients are set up within a day.
Which deadlines matter most for landlord & property tax?
The next four dates that apply to landlord & property tax are shown at the top of this page, calculated from today. For Castelnau clients we diarise every one of them from the day you join and send reminders before each, so the work is done in good time rather than in the last week before a penalty.
Start the conversation from Castelnau
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.