Wales · Wales
Accountants in Thornhill, Cardiff
IGI Accounting serves businesses and individuals in Thornhill, Cardiff entirely online, with every fee published and fixed before work starts. Whether you are a sole trader, a landlord, a limited company director or a contractor in Thornhill, the service is the same as for clients anywhere in Wales: records by WhatsApp or email, drafts back for approval with the figures explained, and electronic filing with HMRC and Companies House once you have signed off.
Next deadlines
- VAT return and payment for the quarter that ended last month
- VAT return and payment for the quarter that ended last month
- VAT return and payment for the quarter that ended last month
- Confirmation statement due within 14 days of your review date, at least once every 12 months
Services
What we do for Thornhill and what it costs
The eight core services below each have a page for Thornhill, Cardiff; specialist and advisory services are delivered nationally and are listed further down. Every fee is fixed and confirmed in writing before work starts.
Why IGI
Working with Thornhill businesses
We built the service around what business owners in places like Thornhill, Cardiff actually complain about: not knowing what the accountant will charge, finding out about a deadline after it has passed, and receiving a set of accounts with no explanation. Each is fixed by design: fixed fees, deadline tracking shown on every page, and a plain-English summary with every draft for Thornhill clients.
We serve Thornhill, Cardiff 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 self assessment tax returns.
A named person handles your self assessment tax returns from Thornhill and knows the file, so you are not re-explaining your business to a different helpdesk each time.
One fixed fee for self assessment tax returns in Thornhill, Cardiff, agreed in writing before any work starts and never changed part-way through the job, however long it takes us.
Local facts
About Thornhill, Cardiff
Thornhill, Cardiff sits in Wales. Welsh taxpayers pay Welsh rates of income tax, set by the Senedd and currently matching the English bands, collected under a C-prefixed tax code. National Insurance, VAT and Corporation Tax are UK-wide. Property purchases in Wales pay Land Transaction Tax to the Welsh Revenue Authority rather than Stamp Duty, with its own bands and rates.
| Place | Distance | Direction |
|---|---|---|
| Lisvane | 0.7 mi | E |
| Llys-faen | 0.7 mi | E |
| Cwm, Cardiff | 0.7 mi | N |
| Llanishen, Wales | 1 mi | S |
| Rhiwbina | 1 mi | SW |
| Rhydwaedlyd | 1 mi | SW |
| Thornhill, Caerphilly | 1 mi | NW |
| Birchgrove, Wales | 2 mi | S |
National services
Also available to Thornhill clients
These services do not vary by location and are delivered the same way for Thornhill, Cardiff as for the rest of the UK.
- Limited by Guarantee Formation from £49
- Dormant Company Formation from £29
- Non-Resident UK Company Formation from £149
- Registered Office Address from £69/yr
- Confirmation Statement Filing £33
- Company Name Change £49
- Director Appointments & Resignations £29
- PSC Register Changes £39
- SIC Code Change £39
- Registered Office Address Change £29
- VAT Registration £49
- PAYE Employer Registration £49
- UTR Registration £29
- CIS Registration £49
- Dormant Company Accounts £49
- Make a Company Dormant £44
- Company Strike-Off & Dissolution £59
- CIS Tax Returns from £30/mo
- R&D Tax Credits from £999
- Crypto Tax from £199
- Capital Gains Tax from £149
- Landlord & Property Tax from £149
- Contractor Accountants from £75/mo
- Startup Accountants from £59/mo
- E-commerce Accountants from £79/mo
- Freelancer Accountants from £45/mo
- Small Business Accountants from £65/mo
- Locum Accountants from £69/mo
- Management Accounts from £99/mo
- Tax Planning from £249
- Business Advisory from £149
- Cash-Flow Forecasting from £199
- HMRC Investigation Support from £299
- Making Tax Digital from £99
- Accounting Software Support from £99
Worth knowing
Rules that affect most businesses here
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.
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.
The Self Assessment calendar
The tax year runs from 6 April to 5 April. Anyone new to Self Assessment must register by 5 October after the end of the tax year in which their untaxed income began. The online return and the balancing payment are due by 31 January, with a second payment on account on 31 July where they apply. Paper returns have an earlier deadline of 31 October and are rarely sensible.
Switching accountants
You can switch accountant at any point in the year. The new firm requests clearance and your records from the old one, which cannot withhold your own documents though it may hold its own working papers until its fees are settled. Agent authorisations with HMRC and Companies House are transferred, and the next deadline is picked up without a gap.
Payments on account
If your Self Assessment bill exceeds £1,000 and less than 80% of your tax was collected at source, HMRC asks for two advance payments towards the following year, each half of the current bill, due 31 January and 31 July. The first year this happens the January payment is effectively one and a half times the bill. We model it in advance and show you how to reduce the payments if income is falling.
Questions
Questions from Thornhill
How quickly do you respond?
In UK working hours, usually within a few hours and always the same working day. Each Thornhill client has a named contact who knows the file. Outside working hours, WhatsApp and email messages are picked up first thing the next morning. In January and at other peak times we tell you your turnaround when you book rather than leaving you guessing.
Are your fees inclusive of everything?
Our fee covers the work described for the package. Companies House fees, such as £100 to incorporate or £50 for a confirmation statement, are charged separately and passed on at cost. Software subscriptions are in your own name. There is nothing else: no hourly extras, no charge for questions, and no additional year-end invoice for Thornhill, Cardiff clients on monthly packages.
What if my Thornhill business is a partnership or an LLP?
Both are covered. Partnerships need a partnership return and a Self Assessment for each partner; LLPs file accounts with Companies House under company-style rules as well. We quote a fixed fee for the set based on the number of partners or members, and the process is the same as for any other client in Thornhill, Cardiff: records in, draft out, approve, filed.
Do you work with businesses in Wales that are not in Thornhill itself?
Yes. Every place in Wales has its own page on this site and the same fees apply throughout. The nearest-places list on this page links to them. Wherever in Wales your business is based, the service is identical because none of it depends on where you are.
Which deadlines matter most for self assessment tax returns?
The next four dates that apply to self assessment tax returns are shown at the top of this page, calculated from today. For Thornhill 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.
How do I get started from Thornhill, Cardiff?
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 self assessment tax returns. Once you confirm, we tell you exactly which records to send and the work begins. Most Thornhill clients are set up within a day.
Ready to fix your fee in Thornhill?
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.