Who We Are
Sinewave Computer Services Pvt. Ltd. delivers reliable, user-friendly taxation & accounting solutions across India.
The CA Cloud Portal unifies GST, ITR, TDS, and client management into a secure, cloud-based ecosystem.
36 Years of Trusted Tax & HR Solutions
ISO 9001:2015 Certified | Serving 30,000+ Clients Across India
- GST • TDS • Income Tax • Payroll
- Comprehensive Solutions for SMEs
Our Mission
Our mission is to empower tax and finance professionals with smart, cloud-driven automation, enhancing accuracy, productivity, and collaboration.
Our Vision
To be India’s most trusted technology partner for CAs & enterprises through digital transformation and transparent compliance solutions.
About the Platform
The CA Cloud Portal provides a unified workspace for client management, deadlines, and compliance workflows.
Built on secure cloud architecture, it ensures smooth automation, real-time collaboration, and seamless updates.
Best Taxation Solution Provider in India
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Objective
To deliver high-quality, timely, transparent solutions for all stakeholders.
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Continuous Improvement
Risk assessment, quality systems, and an evolving innovation-driven culture.
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Transparency
Open communication and clear processes to ensure client trust and reliability.
Milestones in Our Journey
Over 36 years of innovation — continuously shaping India’s taxation, HR, and compliance ecosystem.
1992
Builder Estimation Software
Introduced project estimation & cost tracking.
Adopted by real estate sector
1996
Sales Tax Software
System for Sales Tax calculations & filing.
Used by 1,000+ businesses
1998
Service Tax Software
Software for service tax computation.
Trusted by consultants
2000
Taxbase Migration
Migrated Taxbase from DOS → Windows.
Modern transition
2002
HR & Payroll Migration
HR & payroll upgraded for better UI/UX.
Improved speed
2005
VAT Software
VAT compliance & filing system.
Supported VAT regime
2006
First E-filing Software
India’s first ITR e-filing app.
50,000+ e-filings
2017
GST Software
Developed GST app for SMEs.
10,000+ GST filers
2018
Cloud Accounting
Anytime-anywhere cloud accounting.
Enabled remote work
2021
Taxbase Mobile App
Mobile app for CA ↔ client sync.
2025
CA Cloud Portal Launch
Unified GST–ITR–TDS cloud ecosystem.
Next-gen fintech platform
Ready to experience the difference?
Start your free trial today — no credit card required.