Nomi’s Self Assessment Tax Return Software for Accountants & Bookkeepers
Nomi provides self assessment tax return software for accountants and bookkeepers in the UK, designed to reduce manual workload, improve accuracy, and simplify HMRC submissions during busy tax seasons.
Instead of relying on spreadsheets and disconnected tools, Nomi brings everything into one platform from client onboarding and HMRC data import to tax preparation, review, and submission.
HMRC data integration
Import client tax data directly using secure HMRC APIs, including employment records, pensions, and SEISS grants. This improves accuracy and removes manual entry errors.
Practice management
Manage workloads with built-in practice management software, giving full visibility of staff tasks and deadlines. Assign work, track progress, and ensure nothing is missed during tax season.
Bulk client collection
Collect tax data using digital tax questionnaires that clients can complete online at any time. This reduces chasing emails and speeds up data collection.
NextGen mobile application
Improve communication with real-time updates, notifications, and secure document sharing. Clients can e-sign tax returns, view deadlines, and track progress.
HMRC Recognised Self Assessment software for UK accountants
Nomi is built as an HMRC-recognised self assessment software, helping firms stay compliant while reducing administrative workload.
What you can manage in Nomi:- Self-employment, employment, property, and partnership income
- Complex tax scenarios including foreign income, capital gains, trusts, and non-residency
- Direct HMRC submissions from a single platform
- Auto-filled tax calculations to reduce manual effort
Task and workflow management
Nomi helps firms stay organised during tax season with structured workflow management built for accountants.
Key benefits:-
Automate task status updates across workflows
- Assign tasks easily to team members
- Track progress across all clients in one dashboard
- Reduce missed deadlines and bottlenecks
- Collect client data in bulk using digital forms
- Request eSignatures without additional tools
- Store documents securely in one place
Comprehensive Self Assessment tax return software features
Nomi supports complete compliance requirements for UK accountants and bookkeepers.
Key capabilities:
- Supports SA100, SA101, SA102, SA103, SA104, SA105, SA106, SA107, SA109, SA110
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Integrates bookkeeping, payroll, and accounts data automatically
- Generates auto-populated tax reports and documents
- Secure document sharing with GDPR compliance
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Centralised storage for all tax records and submissions
This makes it a complete self assessment tax return software for accountants looking for efficiency and compliance in one system.
Go mobile with personal tax return software
Nomi also includes a mobile-first experience for both accountants and clients.
This improves communication and reduces delays during tax season.
Mobile benefits:- Free client access with every package
- Real-time notifications for updates and requests
- Secure submission of tax returns via mobile app
- Built-in eSignature for faster approvals
- Clear visibility of tax liabilities and deadlines
How Nomi self assessment tax return software works
Nomi simplifies the entire tax return process from start to finish.
Collect client data through digital questionnaires
Centralise all client records in a single dashboard
Prepare self assessment and partnership tax returns
Review calculations and validate accuracy
Identify errors early before submission
Submit directly to HMRC and store records securely
Why firms switch to Nomi
Accounting firms choose Nomi to reduce pressure during tax season and improve overall practice efficiency.
Key reasons include:- Faster tax return preparation through HMRC integration
- Better control of staff workload and deadlines
- Improved client communication via secure mobile access
- Reduced manual errors and duplication of work
- Full integration across bookkeeping, payroll, and accounts systems

MTD-compliant tax software
Nomi helps your practice stay prepared for Making Tax Digital, with HMRC-recognised software built for digital tax management.
From maintaining digital records to supporting compliant tax submissions, Nomi provides the tools firms need to manage tax obligations efficiently and confidently.
It's easy to start using Nomi
Simple setup. No training headaches. Nomi is built for accountants and bookkeepers who want to save time from day one.
- ✓ Set up in minutes, not days
- ✓ Data is safe, secure & HMRC recognized software
Explore our other products
Choose the Nomi modules that suit your firm, including payroll software and accounts producton software,
and build a solution that works for you.
Payroll Software
Run payroll with confidence.
- Process payroll quickly and accurately
- Automatically calculate PAYE, National Insurance and pensions
Accounts Production Software
Prepare compliant accounts with ease.
- Create statutory accounts for companies and LLPs
- Produce accurate accounts ready for filing with HMRC and Companies House
Frequently asked questions
Self assessment software helps accountants efficiently prepare, calculate, and file individual tax returns with HMRC, automating calculations and ensuring compliance with latest tax rules.
Accountants, bookkeepers, and small business owners who need to prepare and submit individual or partnership tax returns accurately and on time.
Yes, the software allows direct submission of your self assessment tax return to HMRC through secure integration.
Yes, the system automatically calculates tax liability and applies eligible deductions to reduce errors and save time.
Yes, it is regularly updated to reflect the latest UK tax regulations and HMRC compliance requirements.
Yes, all data is protected with encryption and secure cloud storage to ensure confidentiality and compliance.
Yes, you can track submission status and confirmation updates directly from HMRC within the software.
Yes, accountants can efficiently manage multiple client self assessment returns from a single dashboard.
Yes, Nomi offers a free trial, allowing accountants and bookkeepers to explore the software's features before choosing a subscription plan.
Nomi offers flexible pricing plans to suit different accounting firms and practice sizes. Visit our pricing page or contact our team for the latest pricing information.



