UK Tax Services
AdeptsLaw Firm provides comprehensive tax advisory and compliance services for individuals and businesses operating in the United Kingdom. We guide clients through the full range of HMRC obligations — from Self-Assessment and Corporation Tax to VAT, PAYE, and complex tax disputes — with structured advice, precise documentation, and authoritative representation.
Our UK Tax Services at a Glance
- Self-Assessment income tax return filing
- Corporation Tax (CT600) preparation and filing
- VAT registration, returns, and scheme advisory
- PAYE, payroll, and employer tax compliance
- Capital Gains Tax (CGT) calculation and reporting
- Inheritance Tax (IHT) and estate planning
- HMRC enquiries, audits, and investigation defence
- Non-domicile advisory and international tax planning
- Tax credit and relief claims
- First-tier Tribunal and appellate representation
Personal Tax (Self-Assessment)
Every individual with income outside PAYE — from rental income and freelance earnings to overseas assets and capital gains — must file an annual Self-Assessment tax return. AdeptsLaw Firm prepares accurate, fully reconciled returns and ensures all allowable reliefs are claimed.
What We Cover
- Annual Self-Assessment return (SA100 and supplementary pages)
- Employment income, P60, and P11D reconciliation
- Self-employment and sole trader accounts (SA103)
- UK property income and rental accounts (SA105)
- Foreign income and overseas asset disclosure (SA106)
- Capital gains reporting — property, shares, and other assets (SA108)
- Partnership income (SA104)
- Payment on Account planning and cash flow management
- Undisclosed income and voluntary disclosure support
- HMRC simple assessment review and challenge
Who Should File a Self-Assessment Return?
HMRC requires a Self-Assessment return from anyone who is self-employed, a company director, a higher or additional rate taxpayer, a landlord, or someone with foreign income. If you are unsure whether you need to file, our team will assess your obligations at no risk.
Corporation Tax
UK-registered companies must file an annual Company Tax Return (CT600) and pay Corporation Tax on their profits. AdeptsLaw Firm handles the complete cycle from accounts preparation through to submission and strategic tax planning.
- CT600 preparation and online submission to HMRC
- Corporation Tax computation — adjusted profits, capital allowances
- Quarterly Instalment Payment (QIP) planning for large companies
- Research & Development (R&D) Tax Relief — SME and RDEC claims
- Capital allowances — Annual Investment Allowance (AIA), full expensing
- Creative industry tax reliefs — Film, TV, Video Games, and Theatre
- Group relief and consortium relief claims
- Loss relief — carry-back, carry-forward, and group surrender
- Intangible assets and patent box regime
- Corporate restructuring — demergers, reconstructions, and HMRC clearances
VAT (Value Added Tax)
VAT is one of the most technically demanding areas of UK tax. Whether you are registering for the first time, navigating partial exemption, or defending an HMRC VAT inspection, AdeptsLaw Firm provides clear, authoritative guidance.
- Compulsory and voluntary VAT registration
- Monthly, quarterly, and annual VAT return preparation and filing (Making Tax Digital)
- Flat Rate Scheme — eligibility assessment and management
- Cash Accounting and Annual Accounting Scheme advisory
- Partial exemption calculations and annual adjustments
- Capital Goods Scheme monitoring
- Import VAT, postponed VAT accounting, and customs duty advisory
- Reverse charge — construction and domestic reverse charge
- Zero-rating, exemption, and reduced rate classification
- HMRC VAT inspections, assessments, and penalty appeals
- VAT refund claims and error correction notices
- VAT deregistration and final return
PAYE & Employment Tax
Running a payroll accurately and on time is a fundamental employer obligation. Our payroll and employment tax specialists handle every aspect of PAYE compliance, from initial setup through year-end reconciliation.
- Payroll bureau service — monthly and weekly payroll processing
- RTI (Real Time Information) submissions to HMRC
- Employee tax codes — review, amendment, and employer guidance
- P60 production for all employees
- P11D — benefits-in-kind reporting and Class 1A NIC
- P45 and starter checklists
- Expenses and benefits policy review
- IR35 / Off-payroll working (Chapter 10 ITEPA) assessments
- Status Determination Statements (SDS) for contractors
- Employment Allowance eligibility and claims
- HMRC PAYE investigations and compliance checks
- Settlement Agreement tax implications
Capital Gains Tax (CGT)
Capital Gains Tax applies when you dispose of assets including property, shares, business assets, and cryptocurrency. Our specialists ensure accurate computation, strategic relief planning, and timely reporting to HMRC.
- CGT computation on UK residential property disposal
- 30-day property CGT return (PPDCGT) submission to HMRC
- CGT on commercial property and land
- Business Asset Disposal Relief (BADR) — formerly Entrepreneurs' Relief
- Investors' Relief claims
- Holdover Relief — gifts of business assets and agricultural property
- Rollover Relief — replacement of qualifying business assets
- Share disposal and EIS/SEIS deferral relief
- Annual Exempt Amount planning
- Cryptocurrency gains calculation and reporting
- Negligible value claims
- HMRC CGT enquiries and disclosure
Inheritance Tax & Estate Planning
Inheritance Tax is charged at 40% on estates above the nil-rate band threshold. With careful planning, it is possible to manage this exposure significantly. AdeptsLaw Firm provides strategic estate planning advice and IHT compliance support.
- IHT liability assessment and estate valuation
- Nil-rate band and residence nil-rate band planning
- Gifts — potentially exempt transfers (PETs) and chargeable lifetime transfers
- Trust planning — discretionary trusts, life interest trusts
- Business Property Relief (BPR) — qualifying business interests
- Agricultural Property Relief (APR) — farming and agricultural land
- Deed of variation — post-death estate restructuring
- IHT400 estate return preparation
- Payment of IHT — instalments, heritage assets
- Life assurance planning for IHT funding
HMRC Investigations & Disputes
An HMRC enquiry or investigation demands prompt, professional, and strategic action. Our experienced dispute resolution team manages the entire process — from the opening letter through to settlement or tribunal — protecting your position at every stage.
Types of HMRC Enquiries We Handle
- Section 9A Self-Assessment enquiries — full and aspect
- HMRC Connect and data-matching investigations
- Code of Practice 8 (COP8) — suspected serious tax fraud (civil)
- Code of Practice 9 (COP9) — Contractual Disclosure Facility (CDF)
- HMRC Worldwide Disclosure Facility (WDF) — offshore assets
- Let Property Campaign — voluntary disclosure for landlords
- Corporate Criminal Offence (CCO) advisory
- R&D tax credit compliance checks and enquiries
Dispute Resolution & Tribunal Representation
- Statutory review requests — independent HMRC review
- Alternative Dispute Resolution (ADR) with HMRC
- First-tier Tax Tribunal (FTT) — preparation and representation
- Upper Tribunal referral on points of law
- Court of Appeal and Supreme Court — leading counsel instruction
- Penalty and surcharge appeals — reasonable excuse submissions
- Interest and late payment charge mitigation
Non-Domiciled Individuals & International Tax
The UK's non-domicile rules and its extensive treaty network create both opportunities and obligations for internationally mobile individuals and cross-border businesses. AdeptsLaw Firm provides specialist advice in this complex area.
- Non-domicile status assessment and strategic advisory
- Remittance basis claims and mixed fund analysis
- Statutory Residence Test (SRT) — residency determinations
- Split-year treatment for arrivals and departures
- Double Tax Treaty (DTT) analysis and relief claims
- Foreign income and offshore asset structuring
- HMRC registration and compliance for new UK arrivals
- Temporary non-residence rules — CGT and income
- UK tax implications of overseas trusts and companies
- FATCA and CRS reporting obligations for UK entities
UK Tax Compliance Calendar
Missing HMRC deadlines results in automatic penalties. AdeptsLaw Firm tracks all key filing dates for retained clients and requests information in advance — so nothing is ever missed.
| Date | Obligation | Category |
|---|---|---|
| 5 April | End of UK tax year | All |
| 6 April | Start of new UK tax year | All |
| 31 July | Second Payment on Account — Self-Assessment | Income Tax |
| 5 October | Register for Self-Assessment (if new) | Income Tax |
| 31 October | Paper Self-Assessment return deadline | Income Tax |
| 31 January | Online Self-Assessment filing & tax payment deadline | Income Tax |
| 31 January | First Payment on Account due | Income Tax |
| 19th monthly | PAYE & NIC payment to HMRC (non-electronic) | PAYE |
| 22nd monthly | PAYE & NIC payment to HMRC (electronic) | PAYE |
| 31 May | P60 issued to employees | PAYE |
| 6 July | P11D submission to HMRC | PAYE |
| Quarterly | VAT return filing and payment (standard accounting) | VAT |
| 9 months + 1 day | Corporation Tax payment (after accounting year end) | Corp Tax |
| 12 months | CT600 filing deadline (after accounting year end) | Corp Tax |
Frequently Asked Questions
Not always — but if you earn over £100,000, have rental income, receive untaxed foreign income, are a company director, or have capital gains, you will need to file. We will assess your obligations at no cost.
Yes. We prepare and submit R&D; relief claims under both the SME scheme and the Research and Development Expenditure Credit (RDEC) regime, including the merged R&D; scheme introduced from April 2024.
Contact us immediately. Do not respond to HMRC without professional advice. We will review the notice, advise on your position, and manage all correspondence.
Yes. We provide MTD-compliant software guidance, digital record-keeping setup, and ensure all VAT and income tax returns are submitted through approved software.
Absolutely. We advise on the Statutory Residence Test, non-domicile status, split-year treatment, and pre-arrival planning to ensure you arrive in the UK in the most tax-efficient position.