Custom Tax Extension App with Robust Security Features - FileLater

  • fast, safe, and secure app for tax extension
  • high scalability and performance
  • real-time synchronization with IRS servers
  • third-party integrations


Microsoft.NET Core, Web API, Vue.js, SQL Server, iTextSharp

tax extension app FileLater

Custom tax extension app development that integrates solid security and performance features, so the users send and validate (in time) their tax payments postponements requests.

tax extension app FileLater


Our Client

FileLater is an Authorized IRS e-file Provider and the first company on the Internet that offers taxpayers the ability to eFile federal personal tax extensions (form 4868) and business tax extensions (form 7004) with the IRS, also other state extensions.

FileLater company is on the market since 2005 (over 15 years), and the tax postponements solution was developed to respond fast to a specific challenge that both citizens and companies were facing: safe and secure tax payments postponements.

Client’s needs

Taxpaying Americans struggled for years to meet the dreaded April 15 deadline for personal income taxes as well as the March 15 deadline for most business income taxes.

Considering that the financial consequences for not paying their taxes on time are tough, Americans were looking for a solution to postpone them in a fast, safe, and secure way. (IRS offers the postponement option)

One of our clients recommended Roweb to FileLater owners to develop a solution that can punctually respond to US taxpayers' needs.

tax extension app FileLater

The solution

The very first version of FileLater was developed in 2008. Since then, the digital product has undergone several updates (and we are still working on its development for extended functionalities).

This project's core objective was to create a fast, safe, and secure digital tool so people without tax expertise can quickly extend their tax deadlines without involving a professional tax preparer.


The outcome

A safe and secure application that quickly gained the users’ trust through intuitive functionalities created with their needs in mind.

Benefits for US taxpayers (individuals and companies):

  • can postpone their payments by electronically completing forms 4868 and 7004 and sending them to the IRS using the electronic system;
  • can apply for both online personal and business tax extensions;
  • can finish their IRS online tax extension in minutes;
  • get a confirmation email with the status of their tax extension;
  • can make their tax payment using direct debit from their checking or savings account;
  • have access to flexible online support (online chat, email support, etc.)

Are you interested in developing a custom application able to meet all the security and performance requirements from your industry?

Overcoming client's expectations

We've succeeded in delivering fast exactly the solution that the client needed, which guarantees that we are a reliable soft development partner. So, since then (over 10 years), we offer them development, technical support, and permanent upgrades

Features and functionalities:

  • dynamic and intuitive data collection from disparate sources;
  • real-time synchronization with IRS servers and fast submissions;
  • extensions generators both in digital format (by submission to the IRS) and in pdf format (so requests to be also printed );
  • complex dashboard that provides access to real-time stats and reports;
  • marketing module integrated with SendGrid;
  • deployment in Cloud for Microsoft Azure: the app is hosted and optimized in cloud on multiple servers;
  • the app is designed to provide high scalability;
  • key-features for performance in order to support a large number of concurrent users.


tax extension app FileLater

Third-party integrations

Zendesk, Maxmind, Rebrandly, Google Places API, PayPal, Stripe, Apple Pay


Roles we cover

For the FileLater project, we provided a full-time dedicated software developers team that shifted priorities and adapted fast to the client's requirements.

project manager

full-stack developers


Microsoft.NET Core, Web API, Vue.js,
SQL Server, iTextSharp

The process


Auditing client's needs and requirements


Identifying further opportunities for the client


Developing and testing the app performance and security


Delivering the final version of the app


Ongoing project: continuing optimizations and development

Samples of our work

VMS 365

SQL Server, SQL Reporting, jQuery, Telerik UI for ASP.NET AJAX, WebAPI, ElasticSearch, Knockout, RabbitMq, HTML5...

Tour operator management system


Whise Real Estate CRM