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MTD Assist
Visit MTD Assist websiteView HMRC listing
Our notes
MTD Assist from Glasscubes is a quarterly-update tool that accounting firms give to clients who don't use bookkeeping software. Clients keep spreadsheet-simple records and file quarterly; the final declaration stays with the firm.
Pros
- Free for the accounting firm
- Simple quarterly filing for clients, with an optional firm review step
- White-labelling available
Cons
- Sold through accountants, not directly to individuals
- Does not handle the final declaration ('stays with your firm')
Price
Prices can change without notice, so confirm with the provider before you buy. Spotted an error? Email us.
- Cheapest MTD-capable plan
- n/a (sold to agents)
- Per month
- unknown
- Per year
- unknown
- VAT
- unknown
- Notes
- Sold to accountants and agents; see agent pricing.
- Agent/accountant pricing
- yes. Free for firms. Clients are billed directly by Glasscubes at £36 plus VAT per tax year. Firms choosing centralised billing get a discounted rate (not published).
Really free?
- Quarterly updates free
- no (£36 plus VAT per tax year per client; free for the firm)
- Tax return (final declaration) free
- n/a (final declaration stays with the firm)
- Limits
- None stated
- Bank account condition
- n/a
- Time limit
- None stated
Landlords and spreadsheets
- Excel bridging
- unknown
- Google Sheets bridging
- unknown
- CSV import
- unknown
- Bridging notes
- Described as 'spreadsheet-simple' record keeping; formats not stated.
Checked 18 Oct 2026. Sources:www.glasscubes.com
HMRC listing
What the software provider has told HMRC. “In development” means the provider has committed to building it in time for the 2026 to 2027 tax return.
Features
| Free version | Not included |
|---|---|
| Agent software | Ready now |
| Individual software | Not included |
| Software that creates digital records | Not included |
| Bridging software that connects to records | Ready now |
| Standard update period (6 April to 5 April) | Ready now |
| Calendar update period (1 April to 31 March) | Ready now |
| Making Tax Digital for VAT | Not included |
| HMRC Assist (Submission Feedback) | Not included |
Business income
| Sole trader | Ready now |
|---|---|
| UK property | Ready now |
| Foreign property | Ready now |
Other income sources and items
| Employment (PAYE) | In development |
|---|---|
| UK dividends | In development |
| State Pension income | In development |
| Private pension incomes | In development |
| Partner income from a partnership | Not included |
| Foreign dividends | In development |
| Foreign interest | In development |
| Private pension contributions | In development |
| Construction Industry Scheme | In development |
| Charitable giving | In development |
| Capital Gains | In development |
| Student Loan | In development |
| Marriage Allowance | In development |
| Voluntary Class 2 National Insurance | In development |
| High Income Child Benefit Charge | In development |
| UK interest | In development |
Accessibility
| Blindness or impaired vision | Ready now |
|---|---|
| Deafness or impaired hearing | Ready now |
| Motor or physical difficulties | Ready now |
| Cognitive impairments | Ready now |
Platform
| Software type | Web browser |
|---|---|
| Compatible with | Microsoft Windows Mac OS Linux |
| Mobile App | Android Apple iOS |
| Language | English |