TaxCalc vs Taxpipe: Which CT600 Software Is Better in 2026?

TaxCalc vs Taxpipe: Which CT600 Software Is Better in 2026?

Choosing CT600 filing software is one of those decisions that seems small — until you realise you'll be paying for it every year. TaxCalc and Taxpipe are two popular options for UK limited company directors, but they serve very different needs.

This guide compares them honestly so you can pick the right tool for your company.

Quick Comparison Table

Who Is TaxCalc?

TaxCalc has been around for over 20 years. It started as desktop tax software aimed at accountants and tax professionals, and it's grown into a comprehensive suite covering Self Assessment, Corporation Tax, Partnership returns, and practice management.

Today, TaxCalc offers both a desktop application and a cloud-based version. It's used by thousands of accountancy practices across the UK, and it's a respected name in the industry.

Who Is Taxpipe?

Taxpipe is newer and deliberately focused. It does one thing: help company directors file their CT600 to HMRC without needing an accountant. It's a web-based platform built specifically for sole directors of micro-entity limited companies — the kind of company that doesn't need a full accounting suite.

Taxpipe launched after HMRC announced the closure of their free CT600 filing service, and it's designed to fill that gap with a simple, affordable alternative.

Pricing: This Is the Big One

Let's address the elephant in the room: cost.

TaxCalc charges £108 per year for their Individual & Business edition (which includes CT600 filing). This is a subscription — you pay it every year whether you file one return or twelve.

Taxpipe charges £59 once per CT600 filing. No subscription, no recurring charge. You pay when you need to file, and that's it.

The Three-Year Maths

Over three years, Taxpipe saves you £147 — nearly enough for a third year of TaxCalc. Over five years, the difference grows to £245.

For a micro-entity filing one CT600 per year, that's significant. It's money that could go towards literally anything else in your business.

Want to see exactly what you'll pay? Use the Taxpipe pricing page — it's £59. No hidden extras, no tiers, no "contact sales."

But Isn't a Subscription Better?

Some people prefer subscriptions because they get continuous access and updates. With TaxCalc, you can log in year-round, access your previous returns, and use the software for other tax types.

That's a fair argument — if you actually use those features. If you're a sole director who files one CT600 per year and doesn't do Self Assessment through TaxCalc, you're paying for functionality you'll never touch.

Taxpipe's approach is honest: you're paying for exactly what you need, when you need it.

Features: What Each Tool Does Well

TaxCalc's Strengths

TaxCalc is a feature-rich, professional-grade tax suite. Its strengths are clear:

• Broad coverage: CT600, SA100, SA800 (partnerships), and more in one package
• Full accounts preparation: Supports FRS 102, FRS 102 Section 1A, FRS 105, and more
• Desktop and cloud options: Some users prefer desktop software for sensitive tax data
• Track record: 20+ years in the market, used by thousands of accountants
• Advanced features: Transfer pricing, group relief, research and development claims, capital allowances schedules
• HMRC integration: Direct filing for multiple tax types
• Multi-year data: Keep years of returns in one place

If you're an accountant managing multiple clients, or if your company has complex needs (multiple associates, group relief claims, significant R&D tax credits), TaxCalc's breadth is a genuine advantage.

Taxpipe's Strengths

Taxpipe takes the opposite approach — deliberate simplicity:

• Guided step-by-step flow: No accounting jargon, no confusing forms. It asks you questions in plain English
• Auto-generated iXBRL accounts: iXBRL tagging is handled automatically — you don't need to understand it
• Corporation tax computation: Calculates your tax including marginal relief if applicable
• Built-in validation: Catches common CT600 mistakes before you submit
• Direct HMRC submission: Files your CT600 via HMRC's API — no printing, no posting
• Works for all simple companies: Active, dormant, or nil-return companies
• No installation: It's entirely web-based, works on any device
• No learning curve: If you can fill in an online form, you can use Taxpipe

The entire philosophy is: you shouldn't need to be an accountant to file a simple tax return.

User Experience: How They Actually Feel

Using TaxCalc

TaxCalc's interface reflects its heritage as professional software. There are menus, toolbars, schedules, and data entry screens that mirror HMRC's actual CT600 form.

For accountants, this is familiar and efficient. For a first-time director? It can be overwhelming. You're looking at boxes numbered 1 to 850+, and you need to know which ones apply to you, what goes where, and what the various supplementary pages mean.

TaxCalc does provide help text and guidance, but it assumes a baseline level of accounting knowledge. Terms like "trading profits," "charges on income," "loan relationships," and "distributions" appear without much context.

Bottom line: TaxCalc is efficient for people who already know what they're doing.

Using Taxpipe

Taxpipe doesn't show you the CT600 form at all. Instead, it asks you a series of questions:

1. What's your company's turnover?
2. What were your expenses? (With helpful categories)
3. Any capital allowances to claim?
4. Any other income?

Behind the scenes, it maps your answers to the correct CT600 boxes, generates the iXBRL accounts, calculates your corporation tax, and prepares everything for submission.

You don't need to know what Box 155 is. You don't need to understand FRS 105. You just answer the questions honestly, and Taxpipe handles the rest.

Bottom line: Taxpipe is designed for people who want to file and move on.

Ready to try the simple approach? Sign up for Taxpipe and see how easy CT600 filing can be.

Who Should Choose TaxCalc?

TaxCalc is the better choice if:

• You're an accountant or bookkeeper managing multiple clients
• Your company has complex needs — multiple subsidiaries, group structures, R&D claims, overseas income
• You also need Self Assessment and want one tool for everything
• You need full FRS 102 accounts (not just micro-entity)
• You prefer desktop software that runs locally on your computer
• You already know your way around a CT600 and want full control over every box

TaxCalc earns its subscription fee if you're using it to its full potential. An accountancy practice filing 50+ returns per year gets excellent value.

Who Should Choose Taxpipe?

Taxpipe is the better choice if:

• You're a sole director of a small limited company
• Your company qualifies as a micro-entity (turnover under £632,000, assets under £316,000, 10 or fewer employees)
• You want to file your CT600 yourself without hiring an accountant
• You don't want a subscription — you want to pay once per filing
• You value simplicity over power features
• You're filing for the first time and don't want to learn accounting software
• You used HMRC's free filing service and need a replacement
• Your company is dormant and you just need a quick nil return

In short: if you're a DIY director with a simple company, Taxpipe is built specifically for you.

Common Scenarios: Which Tool Wins?

Scenario 1: Sole Director, IT Contractor, £80K Turnover

You run a one-person IT contracting company. Your income comes from one or two clients, your expenses are straightforward (home office, equipment, travel), and you pay yourself a small salary plus dividends.

Winner: Taxpipe. This is exactly the kind of company Taxpipe was designed for. You don't need TaxCalc's advanced features, and you'll save £49+ per year.

Scenario 2: Property Company With 5 Rental Properties

You have a limited company holding five buy-to-let properties. You need to account for rental income, mortgage interest, capital allowances on fixtures, and potentially property income on your CT600.

Winner: It depends. If the properties are straightforward and the company qualifies as a micro-entity, Taxpipe can handle it. If you have complex depreciation schedules or need full FRS 102 accounts, TaxCalc (or an accountant) may be more appropriate.

Scenario 3: Accountant With 30 Clients

You're a qualified accountant managing CT600 filings for 30 small companies. You need batch processing, client management, and integration with your practice workflow.

Winner: TaxCalc. Taxpipe is built for individual directors, not practices. TaxCalc's practice management features are specifically designed for this use case.

Scenario 4: Dormant Company, No Trading Activity

Your company hasn't traded this year. You still need to file a CT600 nil return but there's nothing to report.

Winner: Taxpipe. Paying £108/year for TaxCalc to file a nil return makes no sense. Taxpipe's £59 one-time fee is much more proportionate — and the process takes about 15 minutes.

Scenario 5: First-Time Director, Never Filed Before

You incorporated your company last year and this is your first CT600. You're not an accountant, and tax software intimidates you.

Winner: Taxpipe. The guided, jargon-free experience is specifically designed for you. TaxCalc assumes you already know what a CT600 is and how it works.

What About Accuracy?

Both tools file directly to HMRC using their official API. Both generate valid iXBRL accounts. Both calculate corporation tax correctly (including marginal relief for companies with profits between £50,000 and £250,000).

The risk of errors doesn't come from the software — it comes from the data you enter. Garbage in, garbage out, regardless of whether you're using TaxCalc or Taxpipe.

That said, Taxpipe's guided approach may actually reduce errors for inexperienced filers. By asking plain English questions instead of presenting raw form boxes, it helps ensure you don't accidentally put turnover in the wrong box or forget to claim an allowable expense.

TaxCalc, on the other hand, gives experienced users more control — which means more power, but also more ways to make mistakes if you don't know what you're doing.

Can You Switch Between Them?

Yes. Neither tool locks you in.

If you start with TaxCalc and decide the subscription isn't worth it for your simple company, you can switch to Taxpipe next year. You'll just need your company's financial information — you don't need to export data from TaxCalc.

Similarly, if your company grows more complex and you outgrow Taxpipe's micro-entity focus, you can move to TaxCalc or hire an accountant.

Your CT600 filing history stays with HMRC regardless of which software you used to submit it.

The Honest Summary

TaxCalc is a powerful tool for professionals. If you're an accountant or you need the full breadth of features, it's a solid choice that's stood the test of time.

Taxpipe is the smarter choice for simple companies. If you're a sole director of a micro-entity limited company and you just want to file your CT600 and get on with running your business, Taxpipe saves you money, time, and stress.

See for yourself. Try Taxpipe — it takes about 20 minutes from start to submission. No subscription, no commitment, just £59 and done.

Frequently Asked Questions

Is TaxCalc or Taxpipe cheaper?

Taxpipe is significantly cheaper for individual company directors. At £59 per filing versus TaxCalc's £108/year subscription, you save £49 per year — and the gap widens if TaxCalc increases their pricing. See our full cost comparison for more context.

Can Taxpipe do everything TaxCalc does?

No — and it doesn't try to. TaxCalc handles Self Assessment, partnership returns, and complex company accounts. Taxpipe focuses exclusively on CT600 filing for micro-entity limited companies. If that's all you need, Taxpipe does it better and cheaper.

Is Taxpipe accurate enough for HMRC?

Yes. Taxpipe files directly to HMRC using their official Corporation Tax API. It generates HMRC-compliant iXBRL accounts and corporation tax computations. The filing is identical in format to what TaxCalc or any accountant would submit.

I'm currently using TaxCalc. Can I switch to Taxpipe?

Absolutely. There's no data migration needed. When your next CT600 is due, simply sign up for Taxpipe, enter your company's financial details, and file. Your previous filings remain on record with HMRC regardless of which software you used.

What if my company grows and I need more features?

Taxpipe is designed for micro-entity companies (turnover under £632,000, assets under £316,000). If your company grows beyond those thresholds, you may need software like TaxCalc or an accountant for your accounts. You can switch at any time.

Does either tool guarantee I won't get an HMRC enquiry?

No software can guarantee that. HMRC selects returns for enquiry based on their own criteria. Both TaxCalc and Taxpipe help you file accurately, which is the best protection against enquiries.

Can I use Taxpipe if I'm an accountant filing for clients?

Taxpipe is designed for individual company directors rather than accountancy practices. If you're an accountant with multiple clients, TaxCalc's practice management features would suit you better.

Which is better for a dormant company?

Taxpipe. At £59 for a nil return, it's more proportionate than TaxCalc's £108/year subscription. Read our guide on dormant company CT600 filing for more details.

Do I still need to understand corporation tax to use either tool?

With TaxCalc, some knowledge is expected — the interface mirrors HMRC's forms. With Taxpipe, the guided flow explains things as you go, so you can file even if you've never done it before. That said, it's always worth understanding the basics — our beginner's guide to CT600 is a good starting point.

What about HMRC's free filing service?

HMRC's free CT600 filing service closed in March 2026. Both TaxCalc and Taxpipe are among the alternatives available. For most sole directors, Taxpipe is the closest thing to the simplicity of HMRC's old free service — but with better guidance.

Last updated: February 2026. Prices accurate at time of writing — check TaxCalc's website and Taxpipe pricing for the latest.

Related Reading

• Accounting Periods Explained — When Does Your Corporation Tax Year Start and End?
• HMRC Free Filing Is Ending March 2026 — What You Need to Know
• What Is a CT600? The Plain English Guide for Company Directors