Corporation Tax returns for small companies · March

Corporation tax return for micro companies in March

We calculate and file your Corporation Tax return as a micro company in March, claim the allowances you are entitled to and tell you what to pay and when.

  • Fixed fee, quoted up front
  • Filed with HMRC
  • 100% online, no office visits

★★★★★ Rated Excellent by 300+ clients

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Get your fixed-fee quote in March

Tell us a little about your company. It takes about a minute.

Prefer to talk? 0203 4411-258 or freephone 0800 6441-258

3,670businesses in Fenland
90%are micro (under 10 staff)
302client reviews, rated Excellent
1 feefixed and agreed up front

What does Corporation Tax return for micro companies in March cost?

We quote a fixed fee for Corporation Tax return for micro companies in March before any work starts, based on your turnover and the state of your records. We handle the whole job online and file with HMRC.

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Best for
Companies with taxable profit to report to HMRC
Fee
Fixed fee, quoted up front
Deadline
Return: 12 months after year end. Payment: 9 months and 1 day after year end
Filed with
HMRC
Service area
Online to March and across the UK

Why March directors choose us for Corporation Tax return for micro companies

Fixed fee

One price for Corporation Tax return for micro companies in March, agreed before we start.

Online from March

Share records and approve everything by email. No travelling, no posting paperwork.

Companies House and HMRC

We handle both filings together so nothing falls between the cracks.

Deadline reminders

We diarise your accounts, tax and confirmation statement dates.

Free eligibility check

Not sure you qualify? Our calculators tell you in a minute.

Local figures, UK-wide help

We use ONS data for Fenland to point out what matters for businesses like yours.

Corporation Tax returns for March micro companies

Corporation Tax is charged on a limited company’s taxable profit, not its accounting profit. The main rate is 25%, the small profits rate is 19% for profits up to £50,000, and profits between £50,000 and £250,000 pay the main rate less marginal relief. Getting the adjustments right, such as adding back depreciation, claiming capital allowances and removing disallowable expenses, is what keeps the bill accurate.

What is included

  • A tax computation built from your accounts
  • Capital allowances on equipment and vehicles
  • A review of director expenses, loan accounts and benefits
  • Trading losses claimed where they arise
  • Return filed with HMRC and a payment reference sent to you
Get my quote

How to file a company tax return in March

  1. 1

    Send your accounts or bookkeeping records.

  2. 2

    We compute taxable profit and the tax due.

  3. 3

    You review the figures and the payment date.

  4. 4

    We file the return with HMRC.

Corporation Tax returns for small companies for March businesses: local facts

March is in the Fenland council area, in the East of England region. ONS figures for 2026 count 3,670 VAT- or PAYE-registered businesses in Fenland, and 3,310 of them (90%) employ fewer than ten people. Many are small enough to use the micro-entity regime.

The largest groups of micro businesses in Fenland are construction (700), wholesale and retail (545) and professional, scientific and technical services (360). For construction companies in March, Construction Industry Scheme deductions, retentions and stage payments can distort profit, so we reconcile your CIS statements before the accounts are prepared. That puts construction at 21% of the local micro-business base.

Zooming in, the ONS neighbourhood area around March (Fenland 009) has 255 VAT- or PAYE-registered businesses, and 235 of them (92%) are micro businesses.

Fenland ranks 987 of the 1105 areas we serve by number of micro businesses, and its micro share of 90% is in line with the 89% average across them. In wholesale and retail (545 micro businesses in Fenland), closing stock and the VAT treatment of different product lines are the usual pressure points, so we value stock carefully and check your VAT records. In professional, scientific and technical services (360 micro businesses in Fenland), fee income, work in progress at the year end and how directors are paid are the key decisions, so we plan these with you before the accounts are finalised.

Fenland at a glance

VAT/PAYE-registered businesses3,670
Micro businesses (under 10 staff)3,310
Micro share90%
Rank of 1105 areas987
Around March (Fenland 009): businesses / micro255 / 235
Construction700
Wholesale and retail545
Professional, scientific and technical services360

Source: ONS UK Business Counts 2026, enterprises registered for VAT and/or PAYE.

Corporation Tax deadlines for March directors

Accounts

Due at Companies House 9 months after your year end.

Tax return

CT600 due at HMRC 12 months after your accounting period ends.

Tax payment

Corporation Tax is due 9 months and 1 day after your year end.

Confirmation statement

At least every 12 months, filed within 14 days of your review period ending.

Full filing deadlines guide · Late filing penalties · Eligibility calculator

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Ready for Corporation Tax return for micro companies in March?

Fixed fee, quoted up front. Filed with HMRC. 100% online.

Questions from March directors

When is Corporation Tax due for a business in March?

Nine months and one day after the end of your accounting period. The return itself is due twelve months after the period end.

Do micro companies pay less Corporation Tax?

Not because they are micro. The rate depends on profit, not size: 19% up to £50,000, 25% above £250,000 and a sliding rate in between.

How many micro businesses are there in Fenland?

The 2026 ONS UK Business Counts show 3,310 micro businesses (fewer than ten employees) among 3,670 VAT- and PAYE-registered businesses in Fenland.

Do I need an accountant based in March?

No. Companies House and HMRC filing is entirely online, so we work with you remotely. We are based in Morden, south London, and work with limited companies across the UK, including those in Chatteris, Wisbech, Ely and March.

How many businesses are there around March?

Zooming in, the ONS neighbourhood area around March (Fenland 009) has 255 VAT- or PAYE-registered businesses, and 235 of them (92%) are micro businesses.

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