Case Study
Scaling Coconut / GoSimpleTax with modern cloud infrastructure to accelerate sustainable business growth
The Success Story
Coconut/GoSimpleTax is a leading UK digital tax platform supporting sole traders and small businesses with HM Revenue& Customs (HMRC) filing, expense tracking, and Making Tax Digital (MTD) compliance. With rapid user growth, the goal was to modernize infrastructure, strengthen security, improve scalability, and deliver a seamless, always-available experience during peak tax seasons.
Aspire Systems partnered with Coconut/GoSimpleTax to modernize the technology foundation and enable sustainable growth. The engagement focused on migrating the platform to a secure, scalable VPC-based cloud architecture with load balancing, while strengthening data protection through GDPR-grade encryption frameworks. We unified the web, iOS, and Android experiences, introduced scalable subscription and payment systems, and automated key administrative workflows to reduce manual effort. As a result, the platform achieved consistent peak-season performance, significantly improved uptime, and delivered a smoother end-user experience supporting over 10,000 monthly tax submissions driving a 144% increase in HMRC self-assessment filings, reducing support tickets, and achieving full Making Tax Digital compliance.
The Challenges
- Outdated Python/Django stack with limited scalability.
- Peak-season traffic caused performance bottlenecks.
- Growing GDPR and compliance requirements.
- Manual integrations create inconsistent user journeys.
- High support volume due to lack of self-service tools.
Aspire Systems’ Solution
- Migrated to VPC cloud with load balancing.
- Implemented GDPR-grade encryption frameworks.
- Unified web, iOS, and Android experiences.
- Built scalable subscriptions and payment systems.
- Automated admin tools and launched MTD capabilities.
Business Benefits
- 10,000+ monthly self-assessment tax return submissions with a 99% increase in uptime.
- 144% increase in HMRC self-assessment filings.
- Reduced support tickets through workflow improvements.
- Achieved Making Tax Digital (MTD) compliance.
- Enhanced security and sustained peak-season performance.
Why Choose Our Software & Tech Services?
250+
cloud applications developed
80+
products built on microservices architecture
2.5M
tickets/incidents handled per year
120+
mobile app platforms developed
