Custom Tax Preparation Software Development

Want to make tax filing a breeze? With Relevant, you will build tax preparation software that will ease the frustration, minimize errors and provide you with the speed you need.

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Tax Software Development Services We Provide:


Our diverse IT experience will help you choose the right set of technologies, create a technology strategy and align it with your current organization's processes.

Custom Software Development

Our skilled team develops high-quality tailor-made software solutions that grow as your business grows and allow you to stay ahead of the curve.

Third-Party Integration

We will easily integrate your tax solution with your other apps, such as payroll software, to help you streamline processes and save money for your big goals.

Support and Maintenance

Relevant's well-trained IT support specialists will ensure that your tax preparation applications are fast, up-to-date, and run smoothly.

Core Tax Preparation Software Features


Form library

Good tax preparation software should include various forms to serve your clients. This particularly can comprise taxpayer forms in other than English languages.



With an e-organizer, you can send emails, forms, and surveys to your clients to get all the necessary data for tax filling. This feature helps you save time and minimize errors.


Missing client information

If you want to have a seamless tax workflow, this feature might be able to help. With it, you can identify the missing documents or other data and automatically send requests to your clients.



It is a fast, convenient, and secure way to get clients' signatures on tax-related documents and forms. To ensure the relevance of the data, it includes statuses, such as declined, signed, expired, etc.


Automated calculations

Using the automatic calculation approach allows you to streamline the tax filing process, decrease rejections of the tax administrators and ensure smooth documents returns.


Error detection

This feature allows detecting various errors and inconsistencies in your files, checking whether everything compiles with the tax laws, and making corrections if needed.


Planning tools

This tool helps to create unique plans for each client based on their present status and tax rates. The feature also enables to save of various scenarios for different accounts.


Tax analysis

The best tax software will have a tax analyzer. This tool allows providing your clients with the most relevant advice on managing their liabilities and avoiding common tax mistakes.


Easy backups

What can be worse than losing clients' data? The feature allows avoiding such a scenario, backup all the critical information, and restoring it if something goes wrong.

Our Tech Stack

Our tax software developers choose a tech stack that allows for building robust, convenient, and secure tax preparation tools.

Microsoft Azure
Google Cloud

Other Fintech Solutions We Build

Mobile payment software solutions

Give your users a friendly way to pay! Create a well-designed and convenient mobile payment solution with us to drive more sales to your business.

Custom payroll software development

Eliminate the pain from your payroll once and for all! We will help you build a smart payroll tool that will enhance the payroll processes following your business needs.

Billing software development

Failed to find an effective billing software? With us, you will build an intuitive invoicing and billing solution that will let you pay promptly and keep your money stream smooth.

Wealthtech software development

Want to build a robo-advisor? Micro-investment platform? Or a digital brokerage tool? Easy! We'll help you embrace the benefits of wealthtech, so you can stay ahead of the curve.

Our Portfolio

Automating generation of weekly payroll reports
View case
Developing a SaaS platform that assists UK homebuyers
View case

Client testimonials

Vahid Walker
Founder of Biderator

We needed skilled staff and no downtime, which is what they’ve delivered. Relevant Software’s flexibility with new ideas, reliability, and transparency add tremendous value to the collaboration, which is foreseen to continue.

Sondre Rennan Nesset
CEO at Sensor Innovation AS

They stayed within our budget and scope, and their deliverables met our expectations. Quality results to-date make re-engagement for further development likely. The project’s thorough discovery phase benefited Relevant Software’s successful execution.

Alexander Sagen
Head of Cloud & Web Software at Airthings AS

They delivered everything they said they would. I'm very happy with them. Relevant Software established a smooth process using agile methodology, while their responsiveness and personable approach contributed to the positive experience.

Paul Carse
CTO at Life Moments Ltd
United Kingdom

We needed a flexible, reliable partner that could turn our idea into reality, one who could quickly provide a team of experts that could design and build our product and infrastructure. Meeting with some of the Relevant team in London, we were impressed by their approach.

Christoph Renk
Founder & CEO of GommeHD.net

The reason we worked with Relevant Software is that they were very proactive about getting information from us. Other companies move slowly, but these guys move fast which is what we liked about them. Before we even kicked off the project, we would go into a lot of detail. That was quite impressive for us.

Ole Jørgen Næss
VP of Product and Engineering at Svenn

We had the challenge to find a trustworthy outsourcing company that we could rely on. Previous attempts ended badly and we needed to find a company that had the skills, good communication and was fair on price. We chose Relevant Software because we felt that they understood our business needs.

Balazs Wellisch
CEO at GameIQ

Relevant Software could adjust to our needs and provide the services that we needed in a way that they became part of our group very quickly. They were dedicated to the project and made sure every stage was made visible to the client.

Andriy Chemes
Co-founder at Radio Skovoroda

We were blown away by the team’s dedication and speed of work. We approached Relevant Software with the goal of creating one of the best online radio experiences in the world. I would say they have successfully achieved this goal.


Is communication going to be easy?

Smooth communication is vital to any collaboration, and software development is not an exception. So it is essential to find a tax software development team that can communicate clearly, honestly, and openly. How to find one? The customer's feedback is a great place to start your search. You can check reviews on both company's websites and platforms like Clutch.

Our clients mentioned in their reviews on Clutch that their projects went very smoothly, particularly to the effective communication style of our specialists. They also said skilled staff, effective project management, and a customer-focused approach characterize the Relevant team.

We believe such reviews are a result of our focused work towards creating efficient communication with our clients that is focused on building trust and delivering the best results.

Who owns the IP?

You own all the intellectual property rights.

Can we communicate via a convenient tool like Slack?

Sure. We use Slack both inside the team and for communication with our vendors, so it will be super easy to use the platform to work with clients too.

We also use Jira for project management tasks, but when it comes to PM software, we are flexible, and it won't be a problem for the team to stick to the software you prefer.

Will the product be architected to scale?

Scalability is vital for the app's success. Therefore, we do plan software to be scalable right from the start. As a result, all the applications we build for our clients can handle a significant number of users while ensuring the best system performance. This, in turn, helps our clients to provide an excellent customer experience in the long run and grow their business confidently.

Will you sign a non-disclosure agreement for my project?

Yes, sure. We respect the confidential information clients provide and are always ready to sign an NDA if they want to. This way, you can be sure that all your sensitive data is safe and protected.

We take the legal documents seriously, so we have a non-disclosure agreement template that we sign with businesses when providing development services to them.

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