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- Smart Structural Calculation Ltd
Company profile · Civil engineering
Smart Structural Calculation Ltd
Smart Structural Calculation Ltd is a 5-year-old private limited company registered in Coventry, company number 12959930, one of 112 civil engineering contractors in Coventry. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
Smart Structural Calculation Ltd over the years
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £605 on the year before, to £605.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £1,345 against £740 owed within a year: 1.8 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £605 | £1,345 | £740 | 0 | |
| 31 Oct 2024 | £0 | £0 | £0 | 0 | |
| 31 Oct 2023 | £0 | £0 | £0 | 0 | |
| 31 Oct 2022 | £0 | £0 | £0 | 0 | |
| 31 Oct 2021 | £0 | £0 | £0 | 0 |
Where Smart Structural Calculation Ltd is registered
The registered office is in Coventry (CV3), in the Coventry local authority area, West Midlands. Show CV3 1GP on a map.
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What happens if Smart Structural Calculation 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 2028 | 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
- 12959930
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 October 2020 (5 years ago)
- Registered office
- 108 Glencoe Road, Coventry, CV3 1GP
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 10 May 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Coventry
Other active civil engineering contractors registered in Coventry.
- SMC Plant & Construction Limited2026
- SN Enterprises Midlands Limited2025
- Stokes Site Services Limited2025
- Stonehart Limited2016
- STS Environmental Limited2025
- Synergen Utilities Limited2020
- T.J. Brayne Limited2018
- Tee Consults Ltd2026
All civil engineering contractors in Coventry · All trades in Coventry · Civil engineering across the UK
Frequently asked questions
When are Smart Structural Calculation Ltd's accounts due?
Smart Structural Calculation Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Smart Structural Calculation Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Smart Structural Calculation Ltd still trading?
Smart Structural Calculation 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 Structural Calculation Ltd do?
Smart Structural Calculation Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Smart Structural Calculation Ltd?
Smart Structural Calculation Ltd was incorporated on 19 October 2020, 5 years ago.
What is the penalty if Smart Structural Calculation 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 Structural Calculation 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.