Otis Tax – What You Need to Know
An in-depth look at Otis Tax — features, strengths, limitations, and who it's best for.
At a Glance
Key facts about Otis Tax at a glance.
| Feature | Otis Tax |
|---|---|
| Software Type | Bridging/Submission Tool |
| Target Users | Sole Traders, Freelancers, Contractors |
| Income Sources Supported | Sole Trader + UK Property + Foreign Property |
| Free MTD Software Plan | Free to sign up; pay per submission |
| MTD Quarterly Updates to HMRC | Yes |
| Final Declaration | Yes |
| Bank Reconciliation | No |
| Automated Bank Feeds | No |
| Invoice Creation | No |
| Receipt Capture (OCR) | No |
| Expense Auto-Categorisation | No |
| Property Portfolio Management | No |
| Tenant Management | No |
| Joint Ownership & Profit Sharing | No |
| Payroll | No |
| HMO Unit-Level Tracking | No |
| HMRC SA105 Box Pre-Mapping | No |
| Spreadsheet Import/Export | Yes (core workflow) |
| Platform | Web |
| GDPR Compliant | Yes |
What Is Otis Tax?
What Is Otis Tax?
Tax returns are complicated, Otis makes them easy.
Otis Tax (otistax.co.uk) is a UK-based, HMRC-recognised MTD bridging software designed for the self-employed — sole traders, freelancers, and contractors — who want the simplest possible route to MTD compliance without switching to full accounting software. Made in London and operated by This is Otis Ltd, the platform allows users to continue keeping their records in Excel or CSV spreadsheets and submit quarterly updates to HMRC by uploading those spreadsheets directly into Otis.
Otis Tax's core philosophy is radical simplicity: most users complete a quarterly update in under 10 minutes. Upload your spreadsheet, review the income and expense summary, and submit directly to HMRC. The platform automatically updates an estimated tax liability after every upload, helping users avoid year-end surprises. At the end of the tax year, Otis pre-populates the Final Declaration from quarterly data, replacing the old Self Assessment return. Otis supports multiple income streams — a user with both self-employment and property income can manage both from the same account, with separate dashboards for each.
Strengths
- HMRC-recognised for MTD ITSA (sole trader, UK property, foreign property)
- Extremely simple: upload spreadsheet, review, submit in under 10 minutes
- Pay-as-you-go or annual bundle pricing — no subscription lock-in
- Real-time estimated tax liability updates after every upload
- Final Declaration pre-populated from quarterly data
- Supports multiple income sources (self-employment + property)
- Deadline reminders for each quarter
- Free to sign up; only pay when ready to submit
- Keeps existing spreadsheet workflow intact
- Foreign property support included
Limitations
- No property management features whatsoever
- No bank feeds or automated transaction matching
- No receipt capture, OCR, or AI categorisation
- No invoicing or payment collection
- No accountant/agent portal or multi-user access
- No chart of accounts, journal entries, or formal P&L
- No phone support — email contact only
- Not suitable for landlords needing full accounting
- No joint ownership or profit-splitting capability
Making Tax Digital Compliance
How Otis Tax Handles MTD Compliance
Otis Tax covers sole trader income, UK property income, and foreign property income for MTD purposes, with quarterly updates and final declarations submitted directly to HMRC. Its spreadsheet-upload workflow means users do not need to change how they keep records — they simply upload their existing Excel or CSV file and Otis validates and submits it. Otis also provides an end-of-period statement process and a pre-populated Final Declaration at year end. However, Otis does not support agent filing, accountant access, or multi-user collaboration.
| Feature | Otis Tax |
|---|---|
| HMRC Recognised (MTD ITSA) | Yes |
| MTD Quarterly Updates | Yes |
| Final Declaration | Yes |
| Digital Record Keeping | Yes |
| Digital Links Compliant | Yes |
| Sole Trader Income | Yes |
| UK Property Income | Yes |
| Foreign Property Income | Yes |
| Multiple Income Streams | Yes |
| Agent Filing on Behalf | No |
Property Management
Otis Tax: No Property Management Features
Otis Tax does not offer any property management functionality. It supports property income from a tax submission perspective — landlords can record rental income and expenses in a spreadsheet and submit them via Otis — but there is no tenant management, no rent tracking, no maintenance logging, no compliance document alerts, no joint ownership tools, and no HMO support. For a landlord managing even a single property with any complexity, this is a significant limitation.
| Feature | Otis Tax |
|---|---|
| Property Portfolio Management | No |
| Tenant Management | No |
| Rent Tracking | No |
| Property Expense Allocation | No |
| Multiple Property Support | Yes |
| HMO Property Support | No |
| Joint Ownership/Profit Sharing | No |
| Maintenance Tracking | No |
| Tenant Screening | No |
| Compliance Document Alerts | No |
| Arrears Tracking | No |
Bookkeeping, Accounting & Digital Record Keeping
Otis Tax: Spreadsheet Upload — No Native Bookkeeping
Otis Tax does not include any bookkeeping features. The platform's entire record-keeping model relies on the user maintaining their own spreadsheet (Excel or CSV) and uploading it to Otis for validation and submission. There is no chart of accounts, no journal entries, no bank reconciliation, no bank feeds, and no automated transaction categorisation. Otis stores digital backups of uploaded spreadsheets for compliance purposes, which satisfies HMRC's digital record-keeping requirement — but only if the spreadsheet itself has been maintained accurately.
| Feature | Otis Tax |
|---|---|
| Cash Basis Accounting | Via spreadsheet |
| Chart of Accounts (Pre-built) | No |
| Journal Entries | No |
| Bank Reconciliation | No |
| Automated Bank Feeds | No |
| Open Banking Integration | No |
| Double-Entry Bookkeeping | No |
| HMRC Box Pre-Mapping | No |
| Xero Integration | No |
| Spreadsheet Import/Export | Yes |
| Digital Record Storage | Yes |
Invoicing, Expense Tracking
Otis Tax: No Invoicing or Expense Automation
Otis Tax has no invoicing capability, no receipt capture, no OCR, and no AI categorisation. Expense tracking is handled entirely by the user in their own spreadsheet before upload. The platform does not automate any aspect of bookkeeping — its role begins when the user uploads a completed spreadsheet for submission.
| Feature | Otis Tax |
|---|---|
| Invoice Creation & Sending | No |
| Invoice Customisation/Branding | No |
| Online Payment Collection | No |
| Payment Tracking/Reminders | Yes |
| Expense Tracking | Via spreadsheet only |
| Receipt Capture (OCR/Photo) | No |
| Expense Categorisation | No |
| Automated Transaction Matching | No |
| Mileage Tracking | No |
| AI Auto-Categorisation | No |
Reporting & Tax Forecasting
Otis Tax: Real-Time Tax Estimate Only
Otis Tax provides a single reporting feature: a real-time estimated tax liability that updates after every spreadsheet upload. This is a genuinely useful feature for sole traders who want to know approximately what they owe HMRC throughout the year. Beyond this estimate, Otis Tax produces no formal financial reports — no P&L, no balance sheet, no dashboard, no portfolio overview.
| Feature | Otis Tax |
|---|---|
| Profit & Loss Report | No |
| Balance Sheet | No |
| Trial Balance | No |
| Dashboard/Overview | No |
| Real-Time Financial Data | Estimated tax liability only |
| Cash Flow Reporting | No |
| Tax Estimate/Forecast | Yes |
| AI-Powered Features | No |
Collaboration & Mobile Apps
Otis Tax's Collaborative Features
Under Making Tax Digital, many landlords work closely with accountants or letting agents to manage quarterly submissions and year-end declarations. The ability to delegate filing, share access, and manage records on the go are practical necessities — and this is where the gap between RentalBux and Otis Tax becomes especially stark.
| Feature | Otis Tax |
|---|---|
| Accountant/Advisor Portal | No |
| Multi-User Access | No |
| Agent Filing on Behalf | No |
| Bank Integration | No |
| Platform | Web Browser only |
| Web Browser Access | Yes |
| FCA Regulated | Yes |
| GDPR Compliant | Yes |
Ease of Use, Support & Security
Otis Tax's Ease of Use, Customer Support & Security
Otis Tax is designed around maximum simplicity — upload a spreadsheet, review, submit. The platform is web-only with no mobile app. Customer support is via email at team@otistax.co.uk; there is no phone support or live chat listed on the platform's website. Otis Tax describes itself as still in active development, with plans to integrate with fintech systems and additional APIs in future. No Trustpilot rating is publicly available for Otis Tax at the time of publication.
| Feature | Otis Tax |
|---|---|
| Phone Support | No |
| Chat Support | No |
| Email Support | Yes |
| Help Centre/Knowledge Base | Blog/guide articles |
| FCA Regulated | Yes |
| Enterprise-Grade Security | Yes |
Unique Features Only Otis Tax Offers
True Pay-as-You-Go Pricing
Otis Tax's £25-per-submission model means users only pay when they actually submit. There are no monthly subscription fees, no commitment, and no charge for signing up or setting up the account. For a sole trader who files infrequently or wants to test the platform before committing, this is a genuinely unique pricing structure.
Spreadsheet-First Workflow
Otis Tax is built specifically for users who want to keep their existing spreadsheet records and simply need a compliant submission bridge to HMRC. No new software to learn, no data migration, no change to existing habits — just upload and submit.
Extreme Simplicity
Otis claims most users complete a quarterly update in under 10 minutes. For a sole trader with straightforward income and no property complexity, this frictionless experience is a genuine advantage over full accounting platforms.
Who Should Choose Otis Tax?
Otis Tax is the better choice for:
Sole Traders and Freelancers with Simple Income
If you are self-employed with a single business, already maintain records in a spreadsheet, and simply need a compliant way to submit four quarterly updates to HMRC per year — Otis Tax delivers exactly this with minimal cost and minimal effort.
Contractors Who Don't Want to Change Their Workflow
tis Tax's spreadsheet-upload model means zero disruption to existing record-keeping habits. No new software to learn, no data migration.
Budget-Sensitive Self-Employed Individuals
At £80/year for a sole trader with one income source, Otis Tax is one of the lowest-cost HMRC-recognised MTD submission options available.
Users Who Prioritise Simplicity Over Features
If accounting software feels overwhelming and you simply want to stay HMRC-compliant with minimum admin, Otis Tax's promise of a 10-minute quarterly update is genuinely attractive.
Self-Employed Individuals Who Already Have an Accountant
If your accountant handles your books and you just need the submission layer, Otis Tax covers the compliance requirement at low cost — though note that your accountant cannot access Otis Tax on your behalf (no agent portal).