Scaling Coconut / GoSimpleTax with modern cloud infrastructure to accelerate sustainable business growth

Context and Business Goals.

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.

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• Outdated Python/Django stack with limited scalability.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?