- Companies
- Motor traders
- Thetford
- Smart Under Ltd
Smart Under Ltd
- Company number
- 16143852
- Incorporated
- 18 Dec 20241 year trading
- Registered office
- Unit 1, Brunel Way, Thetford, IP24 1HP
- Nature of business
- Sale of used cars and light motor vehicles; Activities of insurance agents and brokers
Smart Under Ltd is a 1-year-old private limited company registered in Thetford, company number 16143852, one of 23 motor trade companies in Thetford. Its next accounts are due at Companies House on 18 December 2026, and its first CT600 is due at HMRC on 17 December 2026.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Smart Under Ltd is registered
The registered office is in Thetford (IP24), in the Breckland local authority area, East of England. Show IP24 1HP on a map.
Other trade companies in IP24
- Screws Carpentry LtdJoiners and carpenters
- Autofinish Car Sales 26 Ltd LtdMotor traders
- Safe Supplies LtdCleaning companies
- Pav Construction & Ground Works LtdBuilders
- Victory Auto Repair LtdMechanics and garages
- Am &SJ Services LtdCivil engineering
- G&K General Builders LtdBuilders
- David Stannard Decorating LimitedPainters and decorators
What happens if Smart Under Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 18 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 Dec 2026 to 18 Jan 2027 | £150 |
| 1 to 3 months late | 19 Jan 2027 to 18 Mar 2027 | £375 |
| 3 to 6 months late | 19 Mar 2027 to 18 Jun 2027 | £750 |
| More than 6 months late | From 19 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16143852
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 December 2024 (1 year ago)
- Registered office
- Unit 1, Brunel Way, Thetford, IP24 1HP
- Nature of business
- Sale of used cars and light motor vehicles (SIC 45112)
Activities of insurance agents and brokers (SIC 66220) - Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 17 December 2025
Filing notes for motor trade companies
Motor trade companies hold vehicle stock, and how that stock is valued at the year end moves the profit directly. Some use the VAT margin scheme.
Similar companies in Thetford
Other active motor trade companies registered in Thetford.
- Thetford Autoparts Limited2013
- Thetford Autos Ltd2025
- Westco Essex Limited2007
- Auto Xpress Direct Limited2025
- Autofinish Car Sales 26 Ltd Ltd2026
- Autofinish Carsales Ltd1995
- Carique Ltd2024
- Carl A.R. Humphrey (Sales) Limited1999
All motor trade companies in Thetford · All trades in Thetford · Motor traders across the UK
Frequently asked questions
When are Smart Under Ltd's accounts due?
Smart Under Ltd's next accounts are due at Companies House by 18 December 2026 (in 67 days), covering the period to 31 December 2025.
When is Smart Under Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 17 December 2025, due by 17 December 2026, and one for the period to 31 December 2025, due by 31 December 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Smart Under Ltd still trading?
Smart Under Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Smart Under Ltd do?
Smart Under Ltd is registered under Sale of used cars and light motor vehicles (SIC 45112); Activities of insurance agents and brokers (SIC 66220).
How old is Smart Under Ltd?
Smart Under Ltd was incorporated on 18 December 2024, 1 year ago.
What is the penalty if Smart Under Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Smart Under Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.