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WELCOME TO CASTP
Your Trusted Partner for Tax, GST & Compliance Solutions
At Suthar Thakkar & Patel (CASTP), we help businesses and professionals manage taxation, GST, audit, accounting, and compliance requirements with accuracy, transparency, and timely execution. Our goal is to simplify complex financial processes and provide reliable financial guidance that supports confident business decisions.
ABOUT CASTP
Professional Expertise Backed by Practical Financial Solutions
Suthar Thakkar & Patel (CASTP) is a Chartered Accountancy firm committed to delivering dependable taxation, compliance, audit, and advisory services to businesses and professionals across industries.
We believe financial management is not just about compliance, it is about building clarity, reducing risk, and helping businesses operate with confidence. Our team brings deep technical expertise combined with a practical understanding of business realities, ensuring every client receives solutions that are accurate, actionable, and aligned with their growth objectives.
GST & Indirect Tax
End-to-end GST advisory and filing services.
Income Tax Advisory
Strategic planning and timely ITR filing.
Audit & Assurance
Independent, thorough, and reliable audits.
Accounting & Bookkeeping
Accurate books, every month.
Compliance Support
ROC, MCA, and regulatory filings handled.
Financial Consultancy
Advisory that drives informed decisions.
OUR SERVICES
Comprehensive Financial & Compliance Services
From day-to-day bookkeeping to complex tax structuring, CASTP delivers the full spectrum of CA services your business needs, executed with precision and professionalism.
Audit & Assurance
Statutory, internal, and tax audits conducted with rigour and independence. We provide transparent reporting that builds stakeholder confidence and ensures regulatory compliance.
GST & Indirect Tax
Complete GST registration, return filing, reconciliation, and advisory services. We help businesses stay compliant under GST while optimising their indirect tax positions.
Direct Taxation
Comprehensive income tax planning, filing, and representation services for individuals, firms, and corporates. We ensure accurate filing and proactive tax planning to minimise liabilities.
Accounting & Bookkeeping
Systematic, accurate, and timely maintenance of your books of accounts. From ledger management to MIS reporting, we ensure your financials are always audit-ready and decision-ready.
Business Compliance
ROC filings, MCA compliance, annual returns, and secretarial services. We manage your statutory obligations so you can focus on running and growing your business.
Financial Consultancy
Strategic financial guidance for business planning, fund structuring, cash flow management, and investment decisions. We act as a trusted financial partner at every stage of your business journey.
WHY CASTP
Reliable Financial Guidance for Growing Businesses
We combine technical expertise with practical business understanding to deliver services that go beyond compliance, we help you build financial clarity and long-term confidence.
Experienced Professional Team
Our qualified CAs and associates bring deep expertise across taxation, audit, GST, and financial advisory, ensuring every engagement is handled by knowledgeable professionals.
Client-Centric Approach
We take the time to understand each client's unique business context, delivering solutions that are practical, personalised, and aligned with your specific goals and industry requirements.
Timely & Transparent Execution
Deadlines matter. We prioritise timely delivery across all engagements, from return filings to audit reports, with complete transparency on progress and outcomes at every step.
Practical Business Understanding
Our advice is grounded in real-world business realities, not just textbook compliance. We bridge the gap between regulatory requirements and practical business operations effectively.
15+
Years of Experience
Serving businesses and professionals with trusted financial expertise across industries.
500+
Clients Served
Businesses, professionals, and individuals trust CASTP for their financial and compliance needs.
6
Core Service Areas
Comprehensive coverage of all CA services under one professional roof.
100%
Compliance Focus
Committed to zero-error execution and full regulatory compliance for every client engagement.

OUR JOURNEY
From Humble Beginnings to a Growing Legacy
Over seven years of growth, trust, and expanding expertise across Gujarat.
1
June 2018 — Founded as Suthar Thakkar & Co.
Partners: CA Poonam Suthar & CA Kailash Thakkar

Location: Sametsikhar Ni Pole, Mandvi Ni Pole, Manekchowk, Ahmedabad, Gujarat – 380001

Our journey began with two dedicated partners and a commitment to delivering trusted financial and compliance services.
2
February 2019 — Relocated to a Larger Office
Partners: CA Poonam Suthar & CA Kailash Thakkar

Location: A/205, Sumel Business Park 6, Nr Hanumanpura BRTS, Dudheshwar, Sahibaugh, Ahmedabad, Gujarat – 380004

Growing client demand led us to a more accessible and professional workspace.
3
June 2023 — New Partner & New Identity
New Partner: CA Mehul Patel

New Name: Suthar Thakkar & Patel

Head Office: 911, Solaris Business Hub, Nr Bhuyangdev Cross Road, Sola, Ahmedabad, Gujarat – 380063

A landmark year — we welcomed a new partner, expanded our expertise, and rebranded to reflect our growing team.
4
June 2023 — Mehsana Branch Office Opened
Branch Office: Shop No F/157, Square One Complex, Radhanpur Road, Mehsana, Gujarat – 384002

Extending our reach beyond Ahmedabad to serve businesses across North Gujarat.
5
August 2025 — Fourth Partner Joins
New Partner: CA Dhaval Thakkar

Second Ahmedabad Office: A/902, Money Plant High Street, S G Highway, Nr BSNL Tower, Jagatpur, Ahmedabad – 382470

With CA Dhaval Thakkar on board, CASTP strengthens its capabilities and opens a second Ahmedabad office to serve more clients across the city.
OUR TEAM
Meet Our Visionary Partners
Our firm is built on the collective expertise and unwavering dedication of our founding partners. Each brings a unique specialisation and a shared commitment to client success and ethical practice.
CA Poonam Suthar
B.Com. FCA, DISA
Specialising in statutory & tax audits, IT governance (DISA), and corporate compliance. Poonam's expertise spans textile, automobile, pharmaceutical, and NGO sectors, ensuring robust internal controls and regulatory adherence.
CA Kailash Thakkar
B.Com. FCA
A seasoned expert in financial planning, management consultancy, and GST matters. Kailash advises clients in manufacturing, IT software, healthcare, and real estate, holding certifications in Bank Con-current Audit and AI for CAs.
Mehul Patel
B.Com. FCA
Based at our Mehsana branch, Mehul excels in audit, assurance, and taxation for pharmaceutical, real estate, and agricultural sectors. He also offers advisory for charitable trusts, NGOs, and educational institutions.
CA Dhaval Thakkar
B.Com. FCA
Dhaval brings extensive experience in statutory & tax audits, corporate advisory, and direct/indirect tax compliance. His expertise supports diverse industries including import/export, machinery, and pharmaceutical companies.
INDUSTRIES WE SERVE
Supporting Businesses Across Multiple Industries
CASTP brings industry-specific knowledge to every client engagement, understanding the unique compliance challenges and financial requirements of each sector we serve.
Manufacturing
GST compliance, cost accounting, and audit services tailored to the complexities of manufacturing operations and supply chains.
Trading & Distribution
GST reconciliation, inventory accounting, and taxation advisory for trading businesses managing high transaction volumes.
Service Businesses
Income tax planning, GST compliance, and financial advisory for service-oriented companies across diverse sectors.
Startups & Entrepreneurs
Company registration, compliance setup, funding advisory, and tax structuring support for early-stage businesses and founders building for scale.
Retail Businesses
GST filing, bookkeeping, and compliance management for retail businesses seeking accurate financial records and simplified operations.
Professionals & Consultants
Personal tax planning, ITR filing, GST registration, and financial advisory services designed specifically for practising professionals and independent consultants.
OUR WORKING APPROACH
Structured, Practical & Client-Focused
Our four-step engagement framework ensures every client receives a consistent, high-quality experience, from initial consultation to ongoing support.
Every client engagement at CASTP follows this structured framework — ensuring nothing is overlooked, deadlines are met, and outcomes consistently meet the highest professional standards.
OUR WORKING APPROACH
How We Work With You
We begin every engagement with a thorough understanding of your business, followed by a strategic plan designed around your specific compliance and financial goals. Execution is precise and transparent, with ongoing support ensuring you are never left without guidance when it matters most.
STEP 1
Understanding Requirements
Every successful engagement begins with listening. We conduct a detailed consultation to understand your business model, existing financial structure, compliance status, and specific objectives. This discovery phase forms the foundation of everything that follows, ensuring our advice is relevant, actionable, and entirely tailored to your needs.
  • Initial consultation and business brief
  • Review of existing financial and compliance status
  • Scope definition and engagement planning
  • Clear communication of deliverables and timelines
STEP 2
Strategic Financial Planning
With a clear understanding of your requirements, our team develops a structured financial and compliance plan tailored to your business. Whether it is tax optimisation, audit preparation, or GST restructuring, we map out the most effective approach, balancing regulatory compliance with practical business considerations.
  • Customised compliance and tax planning roadmap
  • Risk identification and mitigation strategy
  • Timeline and milestone planning
  • Coordination with relevant regulatory frameworks
STEP 3
Accurate Execution
Precision is at the core of everything we do. Our team executes every task, whether a tax return, audit report, or compliance filing, with meticulous attention to detail, adhering to all regulatory requirements and agreed timelines. We maintain complete transparency throughout, keeping you informed at every stage of the process.
  • Timely and error-free filing and reporting
  • Regular progress updates and client communication
  • Rigorous quality checks before submission
  • Documented audit trail for all engagements
STEP 4
Ongoing Support
Our relationship does not end at delivery. We provide continuous advisory support throughout the year, answering queries, monitoring regulatory changes, and proactively alerting you to compliance requirements before they become urgent. With CASTP, you always have a knowledgeable partner you can rely on.
  • Year-round advisory and query resolution
  • Proactive compliance reminders and updates
  • Regulatory change monitoring and guidance
  • Periodic financial and compliance health reviews
CLIENT TESTIMONIALS
Trusted by Businesses & Professionals
Our clients' confidence is our greatest measure of success. Here is what some of the businesses and professionals we work with have to say about their experience with CASTP.
"CASTP has been managing our GST compliance and accounts for over three years. Their team is prompt, thorough, and always available when we need guidance. Highly professional and reliable."
Rajesh Mehta
Managing Director, Mehta Trading Co.
"The team at CASTP helped us set up our startup's financial and compliance structure from day one. Their advice was practical, their execution was flawless, and they made a complex process feel straightforward."
Priya Sharma
Co-Founder, TechSpark Solutions
"As a practising doctor, I needed someone to handle my personal taxes and professional finances efficiently. CASTP has done exactly that — accurate, timely, and always approachable. I couldn't ask for more."
Dr. Ankit Patel
Medical Practitioner & Consultant
"CASTP's audit team conducted our statutory audit with remarkable efficiency and professionalism. Their report was detailed, their process was minimally disruptive, and their insights added genuine value beyond compliance."
Suresh Agarwal
CFO, Agarwal Manufacturing Pvt. Ltd.
"We switched to CASTP after struggling with our previous CA for compliance delays. The difference has been night and day, organised, proactive, and genuinely invested in our business success."
Nisha Joshi
Proprietor, Nisha Retail Enterprises
OUR COMMITMENT
Accuracy. Transparency. Reliability.
These are not just words at CASTP, they are the principles that guide every engagement, every filing, and every piece of advice we deliver to our clients.
GST & INDIRECT TAX
End-to-End GST Compliance & Advisory
GST compliance is one of the most demanding aspects of running a business in India today. Frequent regulatory updates, complex return structures, and the risk of penalties for errors make it essential to have an experienced partner managing your GST obligations.
CASTP provides complete GST services, from registration and return filing to reconciliation, audit, and advisory support. We handle the complexity so you can focus on your business.
GST Registration
New registration, amendments, and cancellations handled seamlessly.
Return Filing
GSTR-1, GSTR-3B, GSTR-9, and all applicable returns filed accurately and on time.
GST Reconciliation
ITC reconciliation, 2A/2B matching, and vendor follow-ups managed professionally.
GST Advisory
Strategic guidance on GST structuring, classification, and dispute resolution.
DIRECT TAXATION
Income Tax Planning & Compliance
ITR Filing
Accurate and timely income tax return filing for individuals, HUFs, firms, and companies.
Tax Planning
Proactive, year-round tax planning strategies to legally minimise your tax outflow.
TDS Compliance
TDS deduction, deposit, and return filing managed with precision and regularity.
Income Tax Notices
Expert representation and response management for income tax notices and assessments.
Effective tax management is a year-round discipline. Our direct taxation team works proactively to ensure you are always prepared, compliant, and structured for maximum tax efficiency, avoiding surprises at the time of filing.
AUDIT & ASSURANCE
Independent Audits That Build Stakeholder Confidence
A well-conducted audit does more than satisfy a regulatory requirement, it provides stakeholders with independent assurance about the reliability of your financial statements and the integrity of your internal controls. CASTP's audit practice is built on rigour, independence, and a commitment to delivering reports that genuinely add value.
Statutory Audit
Mandatory audits under the Companies Act and other applicable statutes, conducted with thorough professionalism.
Tax Audit
Income Tax Act Section 44AB audits completed accurately and within prescribed deadlines.
Internal Audit
Risk-focused internal audits that identify control gaps and provide actionable improvement recommendations.
GST Audit
Comprehensive review of GST records, reconciliations, and compliance to identify and rectify discrepancies.
ACCOUNTING & BOOKKEEPING
Accurate Books. Better Decisions.
Your financial records are the foundation of every business decision. Poorly maintained books lead to inaccurate reports, compliance issues, and missed opportunities. CASTP provides systematic, accurate, and timely bookkeeping and accounting services, ensuring your financials are always ready for scrutiny, decision-making, or audit.
  • Day-to-day transaction recording and ledger management
  • Monthly bank reconciliation and accounts closure
  • Accounts payable and receivable management
  • MIS reports and management accounts preparation
  • Payroll accounting and compliance
  • Year-end financial statement preparation
BUSINESS COMPLIANCE
Stay Compliant. Stay Focused.
Managing statutory and regulatory compliance is a constant responsibility for every business. From ROC filings and annual returns to secretarial compliance and business registrations, CASTP handles your compliance calendar proactively, so you never miss a deadline or face avoidable penalties.
Company Registration
Pvt. Ltd., LLP, OPC, and partnership firm registrations handled end to end.
ROC & MCA Compliance
Annual returns, form filings, and event-based MCA compliances managed on time.
MSME & Udyam Registration
Registration and renewal of MSME certifications and government scheme registrations.
Other Statutory Compliances
PF, ESI, Professional Tax, and other applicable regulatory compliance management.
FINANCIAL CONSULTANCY
Strategic Financial Guidance for Every Stage of Business
Beyond compliance, every growing business needs a trusted financial advisor who understands both the numbers and the bigger picture. CASTP's financial consultancy services are designed to help business owners and management teams make better-informed decisions, whether evaluating a new investment, restructuring finances, or planning for future growth.
Our advisory approach is practical, independent, and always aligned with your business interests.
Business Planning & Projections
Financial models and forecasts to support strategic decisions and investor presentations.
Cash Flow Management
Analysis and advisory on working capital, cash flow optimisation, and liquidity management.
Loan & Fund Structuring
Assistance with loan documentation, CMA data preparation, and debt structuring.
RESOURCE CENTRE
Stay Informed. Stay Compliant.
The regulatory landscape in India evolves frequently. We keep our clients informed of important changes in taxation, GST, and compliance requirements, ensuring you are always one step ahead.
Compliance Calendar
Track key GST, income tax, and ROC filing dates across the financial year. Never miss a deadline with our comprehensive monthly compliance calendar.
Tax & GST Updates
Stay current with the latest changes in income tax regulations, GST notifications, and circulars that may affect your business operations and compliance obligations.
Business Guides
Practical guides on company formation, GST registration, ITR filing, and other common financial and compliance processes, written in clear, accessible language.
FREQUENTLY ASKED QUESTIONS
Common Questions About Our Services
What services does CASTP offer?
We offer a full range of CA services including GST compliance, income tax, statutory audit, internal audit, bookkeeping, ROC compliance, and financial advisory, all under one professional roof.
Do you work with startups?
Yes. We assist startups with company registration, compliance setup, GST registration, tax structuring, and ongoing advisory, providing a solid financial foundation from day one.
How do I get started with CASTP?
Simply reach out to us via our contact form or phone. We will schedule an initial consultation to understand your requirements and propose the most appropriate engagement structure.
Do you handle GST notices?
Yes. We provide expert assistance in responding to GST notices, preparing replies, and representing clients before GST authorities, ensuring the best possible outcome for every case.
Can you manage my monthly bookkeeping?
Absolutely. We offer ongoing monthly bookkeeping and accounting retainer services, ensuring your books are always accurate, up to date, and ready for any audit or review.
Do you work with clients outside your city?
Yes. We service clients across India, leveraging digital tools and secure document sharing platforms to deliver seamless, efficient service regardless of your location.
OUR TEAM
Qualified. Experienced. Committed.
The CASTP team is composed of qualified Chartered Accountants and experienced financial professionals who bring technical depth, regulatory knowledge, and genuine commitment to every client engagement.
OUR VALUES
The Principles That Guide Our Practice
Integrity
We uphold the highest standards of professional ethics and independence in every engagement, maintaining our clients' trust through transparent and honest conduct.
Accuracy
Every return, report, and recommendation we deliver undergoes rigorous review, because accuracy is not optional in financial services.
Timeliness
We respect deadlines absolutely. Our structured workflow ensures every deliverable, from routine filings to complex audit reports, is completed ahead of schedule.
Client Focus
Our clients' success is our success. We approach every engagement with a genuine interest in understanding and addressing your unique financial and compliance needs.
COMPLIANCE OVERVIEW
Annual Compliance Requirements at a Glance
Businesses in India face a broad range of annual compliance obligations. Understanding the landscape helps ensure nothing is overlooked. Here is a high-level overview of the key compliance areas CASTP manages for its clients.
TECHNOLOGY & TOOLS
Modern Tools for Accurate, Efficient Service Delivery
CASTP leverages modern accounting and compliance software to ensure accuracy, efficiency, and security in all engagements. Our team is proficient in the leading financial and compliance tools used across the profession, allowing seamless integration with your existing systems and workflows.
We use secure, encrypted document sharing protocols to protect client data and maintain confidentiality at every stage of our engagement.
Tally & Tally Prime
Standard accounting and financial management software.
GST Portal & TRACES
Direct portal operations for GST and TDS compliance.
Income Tax Portal
ITR filing, notices, and assessments managed directly.
MCA21 Portal
Company law filings and ROC compliance managed online.
CLIENT ONBOARDING
Getting Started with CASTP Is Simple
Initial Enquiry
Reach out via phone, email, or our contact form. We typically respond within one business day.
Discovery Consultation
We schedule a free initial consultation to understand your business, current compliance status, and service requirements.
Engagement Proposal
We provide a clear, transparent engagement proposal outlining services, timelines, and fees — no hidden costs.
Onboarding & Kick-off
Once the engagement is confirmed, we complete onboarding formalities and begin work immediately according to agreed timelines.
OUR COMMITMENT TO YOU
Your Growth Is Our Priority
We do not measure our success by the number of returns filed. We measure it by the clarity, confidence, and peace of mind our clients experience when their finances are in trusted hands. CASTP is committed to being the long-term financial partner every growing business deserves.
SECTOR EXPERTISE
Deep Domain Knowledge Across Key Sectors
Years of working across diverse industries have given our team an understanding of the unique financial and compliance challenges each sector faces. We bring that contextual knowledge to every engagement.
CONTACT US
Reach Out to Our Team
Whether you have a specific financial query, need a compliance review, or are looking for a long-term CA partner for your business, we would be glad to hear from you. Our team is available to discuss your requirements and provide an initial assessment with no obligation.
Office Address
Suthar Thakkar & Patel (CASTP)
Chartered Accountants
India
Business Hours
Monday to Saturday: 10:00 AM – 7:00 PM
SCHEDULE A CONSULTATION
Book a Free Initial Consultation
Not sure where to start? A 30-minute consultation with our team can provide immediate clarity on your compliance status, tax obligations, and the most effective way to structure your financial management. There is no obligation, just clear, professional guidance from qualified Chartered Accountants.
Tax & GST Review
Understand your current tax position, identify potential liabilities, and explore legal optimisation opportunities tailored to your business profile.
Compliance Health Check
Review your current compliance status across GST, income tax, ROC, and other applicable regulations, identify gaps before they become costly issues.
Business Financial Advisory
Discuss your business's financial structure, growth plans, and advisory needs with a qualified CA who understands both compliance and commercial realities.
WHY PROFESSIONAL CA SERVICES MATTER
The True Cost of Getting Finance & Compliance Wrong
Many businesses underestimate the risks associated with inadequate financial management and compliance. Errors in GST returns, missed TDS deadlines, inaccurate bookkeeping, or delayed ROC filings can result in penalties, interest charges, and even legal consequences that far outweigh the cost of professional CA services.
Partnering with CASTP is not an expense, it is an investment in accuracy, risk management, and the financial health of your business.
PROFESSIONAL STANDARDS
Regulated. Qualified. Accountable.
CASTP operates in full compliance with the standards and ethical guidelines prescribed by the Institute of Chartered Accountants of India (ICAI), the apex regulatory body for the CA profession in India.
ICAI Registered
Fully registered and regulated by the Institute of Chartered Accountants of India, adhering to all prescribed professional and ethical standards.
Continuous Learning
Our team regularly participates in CPE programmes, technical seminars, and regulatory updates, staying current with the ever-evolving financial and compliance landscape.
Client Confidentiality
All client information is treated with strict confidentiality under the CA Code of Ethics and our own rigorous data security protocols.
Professional Independence
We maintain complete independence in audit and advisory engagements, ensuring our opinions and recommendations are always objective and unbiased.
Looking for Reliable Tax & Compliance Support?
Partner with CASTP for professional taxation, GST, audit, accounting, and financial advisory services designed to support your business growth and compliance needs. Let us handle the complexity, so you can focus on what you do best.
Suthar Thakkar & Patel
CASTP, Chartered Accountants
Our Services
  • GST & Indirect Tax
  • Direct Taxation
  • Audit & Assurance
  • Accounting & Bookkeeping
  • Business Compliance
  • Financial Consultancy
Contact
info@castp.in
+91 94087 49358
Monday – Saturday
10:00 AM – 7:00 PM
Professional Body
Member of the Institute of Chartered Accountants of India (ICAI)
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