How Otis Works
Welcome 👋. Otis is built to take the stress out of tax for landlords, sole traders, and anyone with UK or foreign property income. We'll guide you through every step of Making Tax Digital, from uploading spreadsheets to submitting returns. Take a look below to see how it all comes together.
Create Your Free Account & Get Onboarded
Sign up and walk through our simple onboarding process. Whether you're self-employed, a landlord with UK or foreign property income, or managing multiple income sources, we’ll guide you through setting up your Making Tax Digital (MTD) obligations.
Let's get started with your taxes
We'll help you figure out your making tax digital requirements.
Do you already know what taxes you need to file?
Convert Spreadsheets into Digital Records
Easily upload your spreadsheets—our software automatically converts them into HMRC-compliant digital records. Your data is securely stored, searchable, and exportable in both PDF and spreadsheet formats.
| A | B | C | D | E | F | G | |
|---|---|---|---|---|---|---|---|
| 1 | Date | Description | Category | Vendor | Amount | Reference | Details |
| 2 | 2023-05-15 | Printer paper and pens | Office Supplies | Staples | £249.99 | ||
| 3 | 2023-05-16 | Creative Cloud subscription | Software | Adobe | £99.50 | Annual plan | |
| 4 | 2023-05-18 | Travel | Uber | -£120.00 | Receipt available | ||
| 5 | 2023-05-30 | Marketing materials | Marketing | PrintShop | -£180.00 | MKT-2023-05 | Brochures and flyers |
| 6 | 2023-06-01 | Office rent | Utilities | Property Management | -£750.00 | RENT-06-2023 | Monthly office rent |
View Your Converted Digital Records
See your uploaded data transformed into organized, HMRC-compliant digital records. Everything is categorized, searchable, and ready for your tax calculations.
📊2024 Digital Records
| 📅Date | 📝Description | 📁Category | 🏪Vendor | 💰Amount | ℹ️Details |
|---|---|---|---|---|---|
| May 15, 2024 | Printer paper and pens | Office Supplies | Staples | £249.99 | |
| May 16, 2024 | Creative Cloud subscription Annual plan | Software | Adobe | £99.50 | Annual plan |
| May 18, 2024 | Travel | Uber | -£120.00 | 📄 Receipt | |
| May 20, 2024 | Laptop purchase Ref: CAP-EXP-23-001 | Capital Expenses | - | -£300.00 | Ref: CAP-EXP-23-001 Warranty: May 20, 2025 |
| May 22, 2024 | May invoice payment Invoice: INV-548 | Income | Freelance client | £800.00 | Invoice: INV-548 Via: Bank Transfer |
Pre-Filled, Simple MTD Forms
Our platform pre-fills your MTD-compatible tax forms using your uploaded data. Just answer a few easy, guided questions. Edit anytime and stay compliant effortlessly.
Quarterly Income Period
Most taxpayers must report income and expenses every 3 months under Making Tax Digital for Income Tax.
The standard quarterly periods are:
- 6 April – 5 July
- 6 July – 5 October
- 6 October – 5 January
- 6 January – 5 April
These are fixed unless you've agreed with HMRC to use different dates.
File Your MTD Returns with HMRC Instantly
Submit your Self Assessment and MTD ITSA returns directly to HMRC in just a few clicks. Get instant confirmation and downloadable proof of submission.
Track Estimated Tax Owed—All Year Long
View real-time estimates of your tax liability throughout the year. Our smart tax calculator keeps you informed—any time, day or night.
-999.99
Estimated Tax Liability
Estimated Liability
This calculation provides an estimate based on available information and may not reflect your final tax liability.
Quarterly Update
Self Employment
Period: 6 Jul 2025 - 5 Oct 2025
ID: XBIS12345678901
Quarterly Update
Foreign Property
Period: 6 Jul 2025 - 5 Oct 2025
ID: XFIS12345678901
Quarterly Update
UK Property
Period: 6 Jul 2025 - 5 Sept 2025
ID: XPIS12345678901
Access All Past Submissions Anytime
Never lose a return again. Download, view, or recheck any previously filed forms from your secure dashboard whenever you need them.