// Case Study

Building a Dynamic Sanity-Powered Calendar for TaxNow

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// client engagement
Written by NextGen Coding Company Engineering Team — senior U.S.-based software engineers and solution architects
Technically reviewed by NextGen Principal Architect (AWS Certified Solutions Architect, 15+ yrs building production systems in fintech, healthcare, and tax technology)
Published Last updated

Client Background

TaxNow is a fast-growing provider of digital tax management services that helps individuals and businesses manage filings, payments, and deadlines efficiently. The company needed a robust scheduling system to automate tax reminders, simplify payment workflows, and provide clients with a personalized view of their financial obligations.

The Problem

TaxNow’s rapid growth created challenges in managing client deadlines, payment processing, and scheduling. Manual updates to tax deadlines and payment schedules led to errors, missed notifications, and reduced client satisfaction. The company required:

  • A centralized, dynamic calendar system capable of updating tax deadlines in real time.

  • Automated reminders for filings and payments via email and SMS.

  • Integrated payments with real-time receipts and invoicing.

  • Scalable architecture to handle a growing client base.

  • Customizable backend for administrators to easily manage events and client communications.

To meet these needs, the platform required seamless integration between Sanity CMS, Next.js, Stripe, AWS, and Supabase.

Our Solution

NextGen Coding Company developed a Sanity-powered dynamic calendar system that combined automation, scalability, and user-centric design to transform TaxNow’s scheduling and payment operations.

Dynamic Content Management with Sanity CMS

The foundation of the calendar system was Sanity CMS, chosen for its real-time editing capabilities and flexible schema customization. Administrators could create, edit, and categorize tax deadlines and reminders directly within Sanity Studio. Using GROQ queries, event data was dynamically fetched and displayed in personalized client dashboards. Real-time updates ensured administrators could modify schedules instantly without downtime.

Interactive Front-End with Next.js

The calendar’s front-end was developed using Next.js, delivering fast performance through server-side rendering (SSR) and static optimization. The user interface included custom React components for scheduling, filtering, and appointment management. Clients could view personalized dashboards, access filing timelines, and interact with calendar elements across all devices with smooth responsiveness.

Secure Payments via Stripe Integration

NextGen integrated Stripe to handle secure, PCI-DSS–compliant transactions directly within the calendar interface. Clients could pay tax service fees, receive instant confirmations, and view payment histories. The integration also automated invoice generation and status updates, reducing manual administrative work for TaxNow’s team.

Scalable Cloud Infrastructure

The system was hosted on AWS, leveraging S3 for document storage and CloudFront for fast global content delivery. The backend utilized Supabase for real-time data management and PostgreSQL support, ensuring secure, scalable operations. Supabase’s built-in authentication and real-time updates allowed client data to sync instantly across dashboards.

Automation and Notifications

Automated workflows were implemented using Zapier, enabling real-time notifications through email and SMS. Clients received timely alerts for tax deadlines, upcoming payments, and scheduled appointments. This automation improved engagement and ensured critical dates were never missed.

Results

The Sanity-powered calendar system transformed TaxNow’s client experience and operational workflows, delivering measurable outcomes:

  • 50% reduction in missed deadlines: Automated notifications and personalized scheduling improved compliance and user accountability.

  • 30% increase in client engagement: Real-time reminders and interactive dashboards enhanced platform usage.

  • Streamlined payment processing: Stripe integration reduced manual payment reconciliation and administrative effort by 35%.

  • Improved operational efficiency: Sanity’s real-time content management allowed administrators to update events instantly, reducing update times by 60%.

  • Scalable performance: AWS and Supabase infrastructure ensured 99.99% uptime and supported continuous growth in client volume.

  • Higher customer satisfaction: The intuitive interface, fast performance, and transparency in scheduling led to a measurable increase in client retention and positive feedback.

Why It Matters

By combining Sanity CMS, Next.js, Stripe, AWS, and Supabase, TaxNow gained a fully automated and future-ready system. Administrators could manage deadlines effortlessly, clients enjoyed real-time insights and reminders, and payments became a seamless part of the tax management experience. The project positioned TaxNow to scale efficiently while maintaining industry-leading customer satisfaction.

Call to Action

NextGen helps businesses unify complex systems into seamless, scalable digital platforms. Whether integrating Sanity CMS, automating workflows, or building secure cloud solutions, our team can help transform your operations.

→ Book a consultation with NextGen https://nextgencodingcompany.com/contact

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// case study faq

Frequently asked questions

What did NextGen actually build in this engagement?
NextGen designed and shipped a production system end to end: architecture, data model, application code, integrations, security review, and deployment. A senior U.S.-based team owned delivery from discovery through launch, and the client kept full ownership of the codebase and cloud accounts.
How long does an engagement like this take?
Most engagements of this shape run eight to sixteen weeks from kickoff to production. A discovery and architecture sprint takes two to three weeks, the first working release lands around week six, and the remaining time covers hardening, integrations, and rollout support.
What technologies were used?
This engagement was delivered with Sanity CMS, Next.js, AWS Lambda, Supabase. A senior U.S.-based team owned the architecture and the implementation, and the client kept full ownership of the codebase and cloud accounts.
Can NextGen deliver a similar outcome for us?
Yes. We start with a paid discovery sprint that produces an architecture, a scope, and a fixed price or a staffed team plan. From there you can proceed with a fixed-scope build or a dedicated team. Book a call and we will scope your project against this case study.
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