Accountants have always been problem solvers. Long before “no-code tools” and automation platforms, accountants were stitching together spreadsheets, macros, templates, and internal systems to make work faster, cleaner, and more reliable. When a process doesn’t quite fit, the instinct isn’t to wait, but to build something better. That mindset is one of the profession’s greatest strengths. It’s why so many firms have highly efficient internal workflows and clever home-grown tools. But when that same instinct is applied to business formation software and company incorporation software, it can quietly create a very different set of challenges.
With Companies House APIs readily available and development resources easier to access than ever, building an in-house incorporation solution can look like a logical next step. On the surface, it feels familiar. Practical. Sensible.
Until you ask the question that really matters: Do you want to be a software developer – or an accountant?
Key Takeaways
- Building your own company incorporation software comes with significant hidden costs
- Developer time, maintenance, and compliance updates quickly add up
- Companies House API changes are frequent and unavoidable
- Bugs and failed filings create real reputational risk
- Lack of dedicated support increases pressure on your team
- Fixed-cost, fully managed business formation software offers predictability and peace of mind
Company Formation Software: Should Accountants Build or Buy?
Why accountants consider building their own solution
The motivation for a DIY approach is understandable. Off-the-shelf tools don’t always feel tailored. Firms want:
- Their own branding
- Tight integration with internal systems
- Control over workflows
- Avoidance of per-filing or subscription fees
And with access to the Companies House API, it can look deceptively simple:
“Pull the data, submit the form, get the incorporation number.”
But that’s where the illusion begins.
The hidden costs of building company incorporation software
Developer time is not free – even in-house
Whether you employ developers or use contractors, development time always has a cost. So, what starts as “a small internal tool” quickly grows:
- Initial architecture and planning
- API integrations
- Data validation rules
- Error handling
- Security and compliance checks
- User interfaces (even internal ones)
- Every hour spent building incorporation software is an hour not spent:
- Improving client service
- Developing advisory offerings
- Automating higher-value workflows
And even once it’s built, the costs keep coming.
Ongoing maintenance never ends
Incorporation software is not a “build once and forget” project. You are signing up for a whole range of ongoing costs:
- Continuous monitoring
- Regular updates
- Unexpected breakages
- Emergency fixes at the worst possible times (usually deadlines)
Even a minor Companies House change can break submissions. When that happens, clients don’t see “API schema mismatch”. They see you failing to deliver.
Companies House API changes are inevitable
Companies House regularly updates:
- Validation rules
- Filing requirements
- Director and PSC data structures
- Error codes and responses
Each change requires:
- Developer investigation
- Code updates
- Testing
- Deployment
- Verification against live filings
Miss an update, and filings start failing, either silently or catastrophically. While a fully managed company incorporation software provider absorbs this risk for you. When you build, you become the compliance layer.
Bug fixes become business risks
All software has bugs. The difference is who carries the risk.
When you build:
- A bug can block multiple client incorporations
- Fixes compete with other development priorities
- Responsibility sits squarely with your firm
When you buy:
- Bugs are identified and resolved by a specialist provider
- Fixes are rolled out across the platform
- You’re insulated from the technical fallout
For accountants, bugs aren’t just annoying; they hold the potential for reputational damage.
No support desk, no safety net
When something goes wrong with an in-house tool, who do you call? The developer who built it last year? The contractor who’s now on another project? Your internal team, already stretched?
Contrast that with a fully managed platform like eFiling, where:
- Support teams deal with edge cases daily
- Issues are diagnosed by people who live and breathe incorporations
- You’re not debugging under pressure while a client waits
Support isn’t a “nice to have”. It’s business continuity.
The illusion of cost savings
The most common argument for building is cost. But let’s be honest about that.
Building costs include:
- Development time (initial and ongoing)
- Opportunity cost of diverted focus
- Maintenance and monitoring
- Compliance risk
- Internal support burden
- Long-term technical debt
These costs are harder to quantify, spread over time, and rarely attributed directly to the software. A fixed-cost, fully managed solution looks more expensive on a spreadsheet but usually works out cheaper in reality.
The case for buying: Fixed-cost, fully managed simplicity
Platforms like eFiling exist for one reason: to let accountants do accountancy.
With a managed business formation software solution, you get:
- Guaranteed Companies House compliance
- Automatic updates when APIs change
- Predictable, fixed costs
- Built-in validation and error handling
- Professional support
- No internal development burden
Instead of becoming a part-time software house, your firm stays focused on:
- Clients
- Growth
- Advisory value
Control vs. responsibility: The trade-off few talk about
Building gives you control but also responsibility. Buying gives you less technical control but much less operational risk. For most accountancy firms, the real question isn’t “Can we build this?” It’s “Should we?”
Control is only valuable if it directly improves client outcomes. Responsibility, on the other hand, always has a cost.
Do you want to be a software developer or an accountant?
This is the heart of the dilemma. Every firm has limited time, attention, and talent. The decision is really how you want to use it. When you choose to build incorporation software, you are choosing to manage a software product, track regulatory change, and handle technical failures.
When you choose a solution like eFiling, you are choosing to offload complexity, reduce risk, simplify operations, and focus on what clients actually pay you for.
Neither choice is wrong. But one is far more aligned with the role of a modern accountant.
In a profession increasingly focused on advisory, efficiency, and scale, the smartest technology decisions are often the ones that remove work, not create more of it. So, before committing to building your own incorporation tool, ask yourself honestly: Do you want to be a developer or an accountant?If the latter, get in touch to find out what eFiling can do for your business.
