Self Assessment Tax Returns · Wales
Self Assessment tax returns in Caergeiliog
If HMRC has asked you for a tax return, the quickest way to get it done from Caergeiliog is to hand it over. You upload what you have, we tell you what is missing, and the finished SA100 comes back for approval with the tax owed explained line by line. One fixed fee for Caergeiliog residents, agreed in writing, no hourly rate.
from £129 · fixed, one-off
Next deadlines
- Online Self Assessment filing deadline and balancing payment due
- Second payment on account due
- Register for Self Assessment if you started self-employment or new untaxed income in the last tax year
- Paper Self Assessment return deadline
Who this is for
Self Assessment Tax Returns for Caergeiliog
Anyone in Caergeiliog who has been told to file a return: the self-employed, landlords with one or several properties, company directors taking dividends, people earning over £100,000 or repaying Child Benefit through the High Income charge, and those with capital gains, foreign income or untaxed savings interest to report.
What is included
Everything inside the fixed fee
- SA100 and every supplementary page you need (self-employment, UK property, dividends, capital gains, foreign income)
- A reconciliation against your HMRC personal tax account so nothing is missed or double counted
- Payments on account calculated and a one-page payment schedule sent to you
- Claims for allowable expenses, pension relief, Gift Aid and the trading allowance checked before filing
- Reminders at 60, 30 and 7 days before the 31 January deadline
- HMRC correspondence about the return we filed handled at no extra charge
How it works
Self Assessment Tax Returns from Caergeiliog, 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
Why Caergeiliog businesses file with IGI
No hourly rate and no surprise invoice. Caergeiliog clients know the fee for self assessment tax returns before they send a single document, and it stays fixed.
Deadline-first: the dates that matter for self assessment tax returns are shown at the top of this page, diarised for every Caergeiliog client and chased before they arrive.
Online only, UK based. There is no office in Caergeiliog to pay for, which is why the fee is the same here as anywhere in Wales; the work is done by people in the UK who answer the same day.
You get one contact for self assessment tax returns, not a queue. Caergeiliog clients message the same person throughout and get an answer in working hours, usually within a few hours.
We explain self assessment tax returns in the words Caergeiliog business owners use, not in accountant's shorthand, and we show our working so you can check it.
You stay in control of self assessment tax returns: drafts go to Caergeiliog clients first, with the figures explained, and nothing leaves us until you say so.
Local facts
About Caergeiliog
Caergeiliog is in Wales, Wales. Businesses in Wales file with the same HMRC and Companies House as England, and for now the Welsh rates of income tax equal the English ones, though the Senedd can vary them. The practical differences are Land Transaction Tax on property and Welsh-specific business support schemes, and company names and documents may be in Welsh.
| Place | Distance | Direction |
|---|---|---|
| Rhosydd | 1.0 mi | E |
| Llanfihangel yn Nhowyn | 1 mi | SE |
| Penrhyn, Wales | 1 mi | S |
| Llanfairyneubwll | 1 mi | S |
| Y Fali | 1 mi | W |
| Valley | 1 mi | NW |
| Llanynghenedl | 2 mi | N |
| Bodedern | 2 mi | NE |
Worth knowing
Rules that come up in this work
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.
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.
Making Tax Digital for Income Tax
MTD for Income Tax replaces one annual return with quarterly digital updates and a year-end declaration, submitted from software. The threshold is gross trading and property income, measured two years earlier, and started at £50,000 in April 2026 before falling to £30,000 in April 2027. Anyone affected needs digital record keeping in place before their start date, not after.
Late filing penalties
Penalties are the clearest reason to work to deadlines. A Self Assessment return one day late costs £100 regardless of whether any tax is due; three months late adds £10 a day. Late company accounts start at £150 and reach £1,500, and double if the previous year was also late. None of this is negotiable afterwards except through a narrow reasonable-excuse appeal.
Corporation Tax rates and marginal relief
Corporation Tax is not a flat rate. Profits to £50,000 pay 19%, profits above £250,000 pay 25%, and the band between is taxed at an effective marginal rate of 26.5% through the marginal relief mechanism. Associated companies share the thresholds, which catches directors who own more than one company and is the most common cause of underpaid tax in owner-managed groups.
The VAT registration threshold
The £90,000 VAT threshold is measured over any twelve consecutive months, which is why a strong quarter can tip a business over unexpectedly. Registration must follow within thirty days of the end of the month the threshold was crossed. Below the threshold, voluntary registration is worth considering when customers are VAT-registered businesses and costs carry VAT.
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.
Questions
Self Assessment Tax Returns questions from Caergeiliog
I am employed and have a small side income. Do I need a return?
If the side income is under £1,000 a year the trading allowance covers it and no return is needed. Above that you must register and file. If the side income is the only reason for the return, the £129 package applies and we make sure your PAYE figures from the P60 are reconciled correctly.
Will Making Tax Digital change my return?
From April 2026 sole traders and landlords with qualifying income over £50,000 send quarterly updates to HMRC through software, with the £30,000 threshold following in April 2027. The year-end return becomes a final declaration. We set this up through our bookkeeping service when it applies to you.
What happens after you file?
You receive HMRC's submission receipt, a PDF of the return, the tax computation and a payment schedule with HMRC's bank details and your payment reference. We diarise next year's deadlines for you and send reminders before each one.
What records should I keep, and for how long?
Invoices, bank statements, receipts, P60s and P45s, dividend vouchers and any HMRC letters. Keep them for at least five years after the 31 January filing deadline of the tax year they relate to. Photos and PDFs are acceptable to HMRC; paper is not required.
Do you handle Scottish or Welsh income tax?
Yes. Scottish taxpayers have six bands from 19% to 48% and Welsh taxpayers have Welsh rates set by the Senedd, both applied automatically from the residence HMRC holds for you. We check that address is right, because an out-of-date one is a common cause of wrong tax codes.
Which expenses can I claim as a sole trader?
Costs that are wholly and exclusively for the business: materials, business travel other than ordinary commuting, a proportion of home running costs, software, insurance, professional fees and bank charges. If your expenses are under £1,000 the trading allowance may be better, and we check both.
How do I get started from Caergeiliog?
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 Caergeiliog clients are set up within a day.
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 Caergeiliog 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.
Fixed fees, filed on time, for Caergeiliog
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.