TinyTax vs Digita Professional: Which CT600 Software Is Right for You?

When choosing software to file your company's corporation tax return (CT600), TinyTax and Digita Professional are two products you might come across. They occupy very different positions in the market: TinyTax is designed for company directors and small limited companies filing their own returns, while Digita Professional is specialist software used by established accountancy practices.

This comparison covers pricing, features, and which product fits your situation.

Quick Comparison

FeatureTinyTaxDigita Professional
Designed forCompany directors, small firmsAccountancy practices
Pricing modelPer filingAnnual subscription (quote)
PlatformWeb-basedDesktop (Windows)
CT600 submission to HMRCYesYes
iXBRL accounts for Companies HouseYesYes
Trial balance importYes — CSV, Xero, QuickBooks, FreeAgent, SageYes
Multi-company managementYesYes
Personal tax (Self Assessment)NoYes
Installation requiredNoYes
Transparent pricingYesNo (quote required)
Extended accounting period handlingYes (automatic split)Yes

What Is TinyTax?

TinyTax is a web-based service for filing UK corporation tax returns (CT600) and Companies House accounts. It is built for company directors who want to file their own returns without needing to hire an accountant, and for smaller accountants and bookkeepers looking for a straightforward, cost-effective CT600 tool.

Key features:

  • Direct CT600 submission to HMRC via the Government Gateway
  • Companies House filing — iXBRL accounts and confirmation statement
  • Automatic marginal relief calculations for profits between £50,000 and £250,000
  • Trial balance import from Xero, QuickBooks, FreeAgent, Sage, and other accounting software
  • Dormant company support — nil CT600 returns and dormant accounts
  • Extended accounting period handling — periods over 12 months are automatically split into two CT600 submissions
  • Per-filing pricing — no annual subscription, pay only for what you file
TinyTax is entirely browser-based. There is no software to install, no setup required, and it works on any device.

What Is Digita Professional?

Digita Professional is desktop tax and accounts software developed by Digita Ltd and now part of the IRIS Software Group. It has been used by UK accountancy practices for many years and covers a broad range of tax disciplines: personal tax (Self Assessment), corporation tax, capital gains, and accounts production.

For corporation tax specifically, Digita Professional offers:

  • CT600 preparation and direct HMRC submission
  • iXBRL accounts production and Companies House filing
  • Integration with IRIS Personal Tax, IRIS Practice Management, and other IRIS products
  • Multi-client management with a central client database
  • Workflow and task management features for practice administration
Digita Professional is a Windows desktop application. It requires installation on a PC or server and is typically configured by a practice IT manager or through an IRIS implementation consultant.

Pricing

TinyTax charges per filing. You can see the current pricing on the TinyTax website. There are no annual subscriptions, no minimum commitments, and no per-user licensing fees. You pay for the filings you make.

Digita Professional is sold on an annual subscription basis. Pricing is not publicly listed — you need to contact IRIS for a quote. Costs are typically several hundred to several thousand pounds per year depending on modules selected and the size of the practice. This makes it economically practical only for firms with a volume of clients that justifies the annual outlay.

Who Should Use TinyTax?

TinyTax is the right choice if you are:

  • A company director who wants to file your own CT600 without hiring an accountant
  • A freelancer or contractor running a limited company with straightforward finances
  • A small bookkeeper or accountant with a handful of limited company clients who need an affordable, simple CT600 tool
  • Looking for a web-based, no-install solution accessible from any device
  • Filing for a dormant company, a first-year company, or a company with standard trading activity
  • Wanting transparent per-filing pricing with no annual commitment
For further guidance on whether to file yourself or use an accountant, see our guide to accountant vs DIY CT600 filing.

Who Should Use Digita Professional?

Digita Professional is better suited if you are:

  • An accountancy practice managing a portfolio of clients across corporation tax and personal tax
  • Already embedded in the IRIS ecosystem and want tight integration with IRIS Practice Management, IRIS Personal Tax, or other IRIS modules
  • Needing Self Assessment (personal tax) alongside corporation tax within a single platform
  • A larger practice that values phone support and an established vendor relationship
  • Comfortable with Windows desktop software and have IT resources to manage installation and updates

Switching from Digita to TinyTax

If you are an accountant currently using Digita and looking for a lighter-weight, more affordable option for your smaller limited company clients, TinyTax can handle CT600 and Companies House accounts for straightforward companies without the overhead of a full practice management system.

TinyTax supports CSV trial balance imports from most accounting software, so there is no need to re-key existing client data. You export from each client's accounting software — Xero, QuickBooks, FreeAgent, and others — and import directly into TinyTax.

For guidance on moving your clients to TinyTax, see our accountant client migration guide.

What TinyTax Does Not Cover

TinyTax focuses on corporation tax (CT600) and Companies House accounts. It does not currently cover:

  • Self Assessment — personal income tax returns, dividend income declarations, employment income
  • VAT returns — these are filed separately via HMRC's Making Tax Digital portal
  • Payroll and PAYE — managed separately through payroll software
  • Capital gains for individuals — relevant for personal tax, not corporation tax
If your practice needs a unified platform covering all personal and business tax disciplines alongside CT600, a comprehensive suite like Digita may better suit your firm's requirements. TinyTax is optimised for doing CT600 and accounts well — it is not an all-in-one practice management system.

Value for Money

For individual company directors and small limited companies, TinyTax offers a significant cost advantage. Per-filing pricing means you pay only when you have something to file — there is no overhead in quiet years or for dormant companies.

For larger accountancy practices that already handle Self Assessment and need deep integration across all tax disciplines, the investment in Digita Professional may be justified by the breadth of the platform and the IRIS ecosystem. The two products serve genuinely different markets, and the right choice depends on whether you need a focused CT600 tool or a full-service practice suite.

Summary

TinyTax and Digita Professional serve fundamentally different audiences. For company directors and smaller accountants looking to file CT600 and Companies House accounts efficiently and affordably, TinyTax offers a straightforward, web-based solution with transparent per-filing pricing. For established accountancy practices managing clients across corporation tax and personal tax within the IRIS ecosystem, Digita Professional provides a broader professional platform.

For further comparisons, see TinyTax vs TaxFiler or TinyTax vs BTC Software. You can also read our overview of the best CT600 software in 2026.