Accounting

Self Assessment Tax Returns · North London

Self Assessment tax returns in Pentonville

We prepare and file Self Assessment returns for people in Pentonville entirely online, for a fee that is fixed before any work starts. Send your records by WhatsApp or email, review the draft we send back, and we file it with HMRC the same day you approve it. The price is the same in Pentonville as anywhere else in England, because there is no office to pay for.

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 Pentonville

Anyone in Pentonville 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 Pentonville, step by step

  1. Tell us your situation

    A short message or call about what you do and what needs filing. We ask the questions that determine the right package and nothing more.

  2. Fixed fee in writing

    You receive one price for the work, confirmed by email before anything starts. It does not change if the job takes longer than we expected.

  3. Send records, review the draft

    Records come by WhatsApp or email. We prepare the draft, explain the figures in plain English and answer your questions.

  4. We file, you get the receipts

    Once you approve and the fee is settled, we submit electronically and forward the HMRC or Companies House acknowledgement the same day.

Why IGI

What you get in Pentonville

The price for self assessment tax returns is published on this page and is what a client in Pentonville pays. We confirm it in writing first, and the invoice matches the quote.

Deadline-first: the dates that matter for self assessment tax returns are shown at the top of this page, diarised for every Pentonville client and chased before they arrive.

No appointments, no travel across North London, no parking. Everything for self assessment tax returns in Pentonville happens online, with a real person on the other end during UK working hours.

You get one contact for self assessment tax returns, not a queue. Pentonville clients message the same person throughout and get an answer in working hours, usually within a few hours.

Plain English, with the numbers. Every draft for Pentonville comes with a short explanation of what the figures mean and what, if anything, you should do about them.

You stay in control of self assessment tax returns: drafts go to Pentonville clients first, with the figures explained, and nothing leaves us until you say so.

Local facts

About Pentonville

Pentonville is in North London, within Islington, in the N1 postcode district, England. Income tax in England follows the UK rates: 20% basic to £50,270, 40% higher to £125,140 and 45% additional, with the personal allowance of £12,570 tapered away above £100,000. National Insurance, VAT and Corporation Tax are UK-wide, and Stamp Duty Land Tax applies to property purchases.

Nearby places we also serve for self assessment tax returns
PlaceDistanceDirection
King's Cross0.3 miW
Kings Cross0.3 miW
Angel0.4 miE
Barnsbury, Islington0.5 miN
Caledonian0.6 miN
St. Pancras and Somers Town0.7 miW
Clerkenwell0.7 miSE
Somers Town0.7 miW

Worth knowing

Rules that come up in this work

The Self Assessment calendar

Four dates govern Self Assessment: 5 October to register, 31 October for paper returns, 31 January to file online and pay, and 31 July for the second payment on account. Missing the January date triggers an automatic £100 penalty before any tax is even considered, so we treat it as the fixed point around which the rest of the year is planned.

Payments on account

Payments on account catch out most people in their second year of self-employment. HMRC assumes next year's tax will match this year's and collects half in January and half in July, in advance, on top of the balancing payment. If profits are dropping you can apply to reduce them, but reducing them too far attracts interest. We calculate the right figure rather than guessing.

Late filing penalties

Lateness is expensive in a way that compounds. For individuals, £100 immediately, then daily penalties, then percentage-based ones at six and twelve months, with interest running on unpaid tax throughout. For companies, Companies House penalties scale with delay and double on repeat, and HMRC adds its own for a late CT600. Filing on time is the cheapest tax planning there is.

Making Tax Digital for Income Tax

The biggest change to Self Assessment in a generation is Making Tax Digital for Income Tax, now live for higher-earning sole traders and landlords and arriving for the rest in stages. Quarterly updates are due by 7 August, 7 November, 7 February and 7 May, built from digital records. The practical consequence is that spreadsheet-and-shoebox bookkeeping is ending for anyone above the threshold.

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.

Corporation Tax rates and marginal relief

Since April 2023 there have been two Corporation Tax rates, 19% small profits and 25% main, with marginal relief smoothing the transition between £50,000 and £250,000 of profit. The band is where planning matters: each pound of profit in it is taxed at an effective 26.5%, so pension contributions and capital expenditure timed to keep profit below £50,000 are worth more than they look.

Salary versus dividends

The salary-and-dividend split is the central planning decision for an owner-managed company. Salary costs employer National Insurance above £5,000 but is deductible; dividends are not deductible but attract lower personal rates and no National Insurance. The optimum changes each April with the thresholds and depends on the director's other income, so it should be set deliberately every year.

Questions

Self Assessment Tax Returns questions from Pentonville

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.

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.

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 does the £129 return cover?

A full SA100 with the supplementary pages for one income source, prepared, checked and filed online. Rental income, capital gains or several income sources move you to the £169 or £199 package, and we tell you which applies before we start, never on the invoice.

How quickly can you file once I send my records?

Most straightforward returns are drafted within five working days of receiving complete records and filed the day you approve. In January we prioritise by deadline risk and tell you your slot when you book, so late bookers are not left guessing.

I have never filed before. Do I need a UTR first?

Yes. If you have not registered we handle the registration as part of the job and HMRC posts your Unique Taxpayer Reference within about ten working days. Start early if your first deadline is close, because HMRC will not accept a return without it.

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 Pentonville 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 Pentonville?

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 Pentonville clients are set up within a day.

Let us take the deadlines off your plate in Pentonville

Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.

WhatsApp for a fixed quote