Tax Accountants · Islington · N1 / EC1 · IR35, HMO Landlords & High Earners

Accountants in
Islington for
Contractors, Landlords & High Earners

Islington clients earn in complex ways: irregular project income, director dividends, HMO rents, and City contractor fees. We structure your tax affairs around how you actually earn, not a generic template. ACCA certified, HMRC authorised, fixed fees, fully remote.

ACCA Certified HMRC Authorised Agent IR35 Specialists HMO & Property Tax High-Earner Planning

Tell us about your income and we'll come back with a clear, fixed-fee proposal within one business day.

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Where Islington Clients Overpay Most

Three Tax Problems We See
Every Week in N1 and EC1

Self assessment for high-earning Islington professionals with mixed and irregular income

High Earners Hitting the £100k Trap

Many Islington professionals, including architects, senior media executives, and City contractors, who cross the £100k threshold without planning for it. Above that, the personal allowance tapers by £1 for every £2 earned, creating a brutal 60% effective rate on income between £100,000 and £125,140. Pension contributions and timing of income can claw much of that back.

Self Assessment Service →
HMO and buy-to-let landlord tax for Islington N1 property investors

HMO Landlords With Under-Reported Costs

Islington has one of the densest concentrations of HMOs and multi-let conversions in London. HMO landlords face specific licensing costs, higher maintenance obligations, and more complex expense apportionment than standard BTL investors, yet most file returns that treat the property like a simple single-let, leaving legitimate deductions on the table.

Landlord Tax Service →
IR35 and HMRC investigation support for Islington contractors and limited company directors

Contractors Exposed on IR35

The Old Street corridor puts Islington contractors in close contact with large tech clients who apply off-payroll rules. A working practice review that was accurate two years ago may no longer reflect the reality of your engagement. We review the full IR35 position, covering contract wording, substitution rights, control, and financial risk, before HMRC does.

IR35 & Investigation Service →
What We Do

Every Tax & Accounting Service
Islington Clients Actually Need

Islington is not a homogeneous client base. A Clerkenwell design practice, an Angel tech contractor, a Barnsbury landlord with a Victorian conversion, and a Highbury director with a spouse on the payroll all have fundamentally different tax situations. Our ACCA-certified team handles each one correctly, at a fixed fee agreed upfront.

Self Assessment Tax Return

Islington professionals rarely have simple PAYE-only income. We handle SA100 returns combining City employment, freelance project fees, foreign royalties, rental income, and share schemes, ensuring the right expenses are claimed and the right elections are made, especially for those approaching or over £100k.

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Landlord & Property Tax

From single N1 flats to multi-room HMOs and Highbury freehold conversions, we handle rental income returns, HMO licensing cost deductions, Section 24 mortgage interest restriction, and CGT planning when you come to sell. Properties bought in the 2000s carry significant embedded gains that need proper management before disposal.

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IR35 Advice & HMRC Investigation Defence

For Islington contractors operating through limited companies, IR35 is the single greatest compliance risk. We assess your working practices, review contract clauses, and document your position correctly. If HMRC opens an enquiry covering IR35, income omissions, or VAT, we take over all correspondence from day one as your authorised agent.

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Corporation Tax (CT600)

Clerkenwell design studios, Old Street tech companies, and EC1 production agencies all face different corporation tax planning considerations: R&D credits, creative sector reliefs, timing of capital expenditure, and the interaction with the director's own personal tax position. We handle all of it as part of one joined-up service.

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Director Salary & Dividend Planning

The optimal salary and dividend split is not one-size-fits-all, particularly when a spouse holds shares, the company has carried-forward losses, or pension contributions are part of the picture. We model the exact numbers for Islington directors annually, including the interaction with the personal allowance taper for those earning above £100k.

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VAT Returns & Making Tax Digital

Upper Street hospitality businesses, Exmouth Market food operators, and EC1 creative agencies each face different VAT scheme decisions: standard, flat rate, or cash accounting. We advise on the most advantageous scheme and handle all quarterly MTD filings, including the transition to MTD for ITSA for sole traders and landlords now coming into scope.

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Capital Gains Tax

An N1 flat bought in 2003 for £280,000 and now worth £850,000 carries a gain that demands careful planning before exchange. We advise Islington vendors on annual exemption use, principal private residence relief for properties that were once a main home, loss offsetting, and the timing of disposal to manage which tax year the gain falls in.

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Small Business Accounting

Islington's creative and professional services sector is full of owner-managed businesses that need rigorous accounting without the overhead of an in-house team. We provide monthly management accounts, year-end statutory accounts, and annual tax returns via Xero, giving directors real financial visibility rather than a once-a-year summary from a disengaged accountant.

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Bookkeeping & Payroll

Project-based billing, milestone invoicing, and irregular client receipts make Islington agencies harder to bookkeep than most. We reconcile Xero in real time, manage the payroll for your team including CIS deductions for construction subcontractors, and keep your cashflow picture accurate enough to make decisions, not just complete the year-end.

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Why Choose Us

Why Islington Clients
Switch to Protax

Most Islington clients who come to us are not first-time taxpayers. They have had an accountant before, one who filed correctly but never proactively flagged the personal allowance taper, never questioned whether the HMO rental income was being optimised, and never reviewed the IR35 position before it became a problem. We do all of that as standard.

  • We Plan Around the £100k Threshold

    Islington has a high concentration of professionals whose income sits close to £100,000, the point where the personal allowance begins to taper at a 60% effective rate. Pension contributions, timing of bonus payments, and the right dividend structure can all bring adjusted net income below the threshold. We model this proactively every year, not reactively after the return is filed.

  • HMO and Multi-Let Property Expertise

    HMO properties generate higher rental income but also higher allowable costs: licensing fees, fire safety compliance, more frequent maintenance, and management costs that must be correctly apportioned across rooms. Most generalist accountants file HMO returns on the same basis as a single-let, missing deductions that are entirely legitimate. We have handled enough Islington HMO portfolios to know exactly where the allowable costs are.

  • IR35 Working Practices Review, Not Just Contract Review

    A well-drafted contract is not enough to protect an Islington contractor if the actual working arrangements tell a different story. HMRC's compliance focus on the tech and media sectors means off-payroll working is scrutinised closely. We look at how the engagement actually operates, including supervision, right of substitution, equipment, and financial risk, and document a defensible position before any enquiry arises. See our full HMRC investigation service.

  • Joined-Up Company and Personal Tax Planning

    An Islington director's company tax return and personal self-assessment should not be prepared in isolation. The corporation tax position, retained profits, available losses, pension contribution timing, and dividend allowance all feed into each other. We hold both files and advise on the combined position, which is how owner-managed businesses should be handled.

  • CGT Planning Before the Sale Is Agreed

    Islington property values mean most long-term owners are sitting on significant capital gains. The time to plan is before the property is listed, not after exchange. We map the full gain, identify all available reliefs including partial principal private residence relief and lettings relief where it still applies, and advise on whether disposal timing affects the tax year in a materially beneficial way.

Who We Help

Specialist Accounting for Every
Islington Client Type

From tech contractors operating near Old Street to Barnsbury landlords with embedded CGT gains and Clerkenwell agency directors balancing company and personal tax, we have the depth of knowledge to handle your situation correctly.

HMO & BTL Landlords

HMO licensing costs, Section 24 relief, CGT on high-gain N1 disposals, and multi-property compliance

Tech & Creative Contractors

IR35 working practice reviews, limited company tax, and £100k threshold planning for Old Street-adjacent contractors

Creative Agencies & Studios

CT600, R&D relief, management accounts, and payroll for Clerkenwell design practices and EC1 production companies

Hospitality & Retail

VAT scheme optimisation, payroll, and MTD compliance for Upper Street restaurants, Exmouth Market traders, and Angel retailers
Free Tax Health Check for Islington Residents & Business Owners

Most Islington Clients Are Overpaying.
Here Is Why.

Islington's income profile is unusual: a high proportion of residents earn above the basic rate threshold, hold property with large embedded gains, and operate through limited companies. Generic tax planning misses the interactions between all three.

A director who has not reviewed their salary and dividend structure since the dividend allowance dropped to £500, a landlord filing an HMO return without claiming all permitted costs, and a contractor whose IR35 position has not been revisited since changing client. All three are likely overpaying. Request a free health check and find out which category you are in.

  • Personal allowance taper review for income near or above £100k
  • HMO and BTL rental return review for missed deductions
  • IR35 working practice assessment for limited company contractors
  • CGT exposure mapping on any Islington property you plan to sell
  • Free 30-minute consultation with an ACCA-certified accountant

Also read: MTD for ITSA: What Islington Sole Traders and Landlords Must Do Before April 2027

Request Your Free Tax Health Check

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Common Questions

Questions We Get Most Often
From Islington Clients

Once your adjusted net income exceeds £100,000, HMRC withdraws the personal allowance at a rate of £1 for every £2 earned above that threshold. The allowance is fully withdrawn at £125,140. This creates an effective marginal tax rate of 60% on income in that band, meaning every additional £1,000 earned between £100k and £125k costs £600 in income tax. Personal pension contributions reduce adjusted net income pound for pound, which is why many Islington professionals near this threshold make additional pension contributions before their year end. We model the exact saving for your income level before advising on the right contribution amount.
Yes, and most HMO landlords under-claim on them. HMO-specific allowable expenses include council licensing fees (Islington Council's selective and additional licensing fees are fully deductible), mandatory fire safety equipment and installation, higher contents insurance where included in the rent, letting agent management fees for a multi-tenant property, and a correctly apportioned share of maintenance costs where communal areas require disproportionate upkeep. Section 24 still applies to HMOs: you receive a 20% basic rate tax credit on mortgage interest rather than a full deduction, but the pool of allowable property costs before you get to the interest restriction is often larger than single-let landlords realise.
Under the off-payroll working rules that have applied to medium and large private sector engagers since April 2021, your client determines your IR35 status and issues a Status Determination Statement. If they determine you are inside IR35, your income from that engagement is taxed as employment income. The risk is not only whether your contract says the right things. HMRC looks at the practical reality of how you work. Key factors include whether you have genuine substitution rights, whether you are subject to supervision and control in the same way an employee would be, whether you provide your own equipment, and whether you bear financial risk. Many Old Street and EC1 tech clients apply blanket inside determinations to reduce their own compliance risk, which may not be accurate for your situation. We review the working practices in detail and, where appropriate, help you challenge an inaccurate SDS.
The gain is broadly the sale price minus your original purchase price, minus allowable buying and selling costs, minus any capital improvements made over the period. N1 properties bought in 2007 have typically increased significantly in value, so the gain can be substantial. If the property was ever your main home, even for part of the ownership period, partial principal private residence relief may apply and the calculation becomes more complex. You also have an annual CGT exemption (£3,000 in 2026/27) and can offset any realised capital losses in the same tax year. The current residential property CGT rates are 18% for basic rate taxpayers and 24% for higher and additional rate taxpayers. Crucially, residential property CGT must be reported and paid within 60 days of completion, not at the January following the end of the tax year. We advise on the full position before you agree a sale price.
Possibly, and it is worth assessing properly before assuming the answer is no. HMRC's definition of qualifying R&D centres on whether your work seeks to resolve scientific or technological uncertainty, not whether you have a laboratory or a dedicated R&D team. Clerkenwell agencies that develop proprietary software tools, build custom technical systems for clients, or use novel technical processes in their production work may qualify under the merged RDEC scheme, which offers a 20% above-the-line credit on qualifying expenditure from April 2024. The most common qualifying costs for creative agencies are software developer salaries apportioned to qualifying projects, cloud computing costs, and data licensing costs directly used in R&D activities. We offer a free eligibility assessment as part of our corporation tax service.
Irregular income is entirely normal for Islington's self-employed and freelance population and does not in itself cause problems with HMRC. The key requirements are that income is declared correctly in the right tax year, expenses are properly evidenced, and self assessment returns are filed and paid on time. Where irregular income creates a risk is when it causes someone to inadvertently cross a threshold: the personal allowance taper at £100k, the VAT registration threshold at £90,000 turnover, or the MTD for ITSA trigger at £50,000 income. We track your income position through the year via Xero so you are never surprised by a threshold breach close to year end.
No. Our practice is based in Wimbledon but we operate entirely remotely for all London clients, including those across Islington, Angel, Clerkenwell, Highbury, and Finsbury Park. We use Xero for cloud bookkeeping, secure portal document sharing, Zoom or Teams for consultations, and digital signing tools for all approvals. Most clients find this faster and more convenient than travelling to a local accountant for a once-a-year meeting. If you do want a face-to-face meeting, you are always welcome at our Wimbledon office at G18, Lombard Business Park, SW19 3TZ, though for most engagements that is never necessary.
Get Started Today

Stop Overpaying. Start Working
With an Accountant Who Plans Ahead.

If your current accountant files correctly but never tells you what to do differently, you are probably paying more tax than you need to. Send us a request and we will review your situation, covering your income type, company position, and property exposure, and come back with a clear fixed-fee proposal and a concrete picture of where the savings are.

  • Free initial assessment, no obligation
  • £100k threshold and personal allowance taper review
  • HMO, BTL, and CGT position covered
  • IR35 working practice assessment for contractors
  • ACCA-regulated, HMRC authorised agent
  • Fixed fee agreed before we start, no surprises

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