Expert Tax, Compliance& Registration Solutions
ITR filing, GST registration, company formation, trademark, ISO, audit, ROC compliance and complete professional support — all under one trusted platform.
CA / CS Hub
20+ Services
Income Tax & GST Services
Complete tax filing, registration and return services handled by qualified CA professionals
Income Tax Return (ITR) Filing
Expert ITR filing for all categories — salaried individuals, business owners, professionals, capital gains, house property and more. Accurate computation with maximum tax saving.
GST Registration & Returns
New GST registration, GSTIN amendment, monthly/quarterly GSTR-1, GSTR-3B filing, annual GSTR-9, GST cancellation and complete GST compliance management.
TDS / TCS Filing & Compliance
TDS deduction, quarterly TDS return filing (24Q, 26Q, 27Q, 27EQ), Form 16/16A generation, TDS correction returns and complete TDS compliance management.
Business & Entity Registration Services
Start your business right — from sole proprietorship to private limited company, we handle everything
Private Limited Company
Complete Pvt Ltd company registration with PAN, TAN, MOA, AOA and all statutory compliances.
LLP Registration
Limited Liability Partnership with separate legal entity, limited liability and operational flexibility.
Partnership Firm
Partnership firm registration with partnership deed drafting and PAN application for tax compliance.
Sole Proprietorship
Registration for individual business with MSME, GST, current account and all required licenses.
OPC Company
One Person Company registration — single director with limited liability protection for solo entrepreneurs.
Section 8 Company
Non-profit company registration under Section 8 for charitable trusts, NGOs and social welfare organizations.
Society / Trust Registration
Public charitable trust and society registration under Indian Trusts Act and Societies Registration Act.
Nidhi Company
Nidhi company registration for mutual benefit societies — accepting deposits and lending to members only.
Government Licenses & Certifications
Essential licenses and certifications required to run your business legally and build credibility
Trademark Registration
Protect your brand name, logo and tagline with registered trademark under the Trademarks Act.
ISO Certification
ISO 9001, ISO 14001, ISO 22000, ISO 45001 and other international standard certifications for your organization.
MSME / Udyam Registration
Udyam registration for micro, small and medium enterprises — mandatory for government scheme benefits and tenders.
FSSAI License
Food safety license for restaurants, food processing, manufacturing, packaging, storage and distribution businesses.
Shop & Establishment License
Mandatory registration under Shop & Establishment Act for all commercial establishments, offices and shops.
PF / ESIC Registration
Provident Fund and ESIC registration for establishments with 20+ employees — mandatory labor law compliance.
Professional Tax Registration
Professional tax registration for employers and employees — mandatory in most states for salary deduction compliance.
Import Export Code (IEC)
IEC registration from DGFT for businesses involved in import or export of goods and services.
Annual Compliance & Audit Services
Keep your business compliant with all statutory requirements — handled by qualified CA professionals
Bookkeeping & Accounting
Complete bookkeeping, accounts maintenance, bank reconciliation and financial statement preparation on monthly or quarterly basis.
ROC Annual Compliance
Complete annual ROC filing for companies — AOC-4, MGT-7, ADT-1, DIR-12 and all mandatory MCA forms.
Why OSC Dhaka for CA / CS Services
Qualified professionals, accurate work and reliable support
Qualified CA / CS Professionals
All services handled by qualified Chartered Accountants and Company Secretaries with proven track record.
100% Accurate & Compliant
Every filing, return and registration done with accuracy — zero penalty risk with proper review before submission.
On-Time Delivery
We respect every deadline — advance reminders, document collection and timely filing to avoid late fees and penalties.
Clear Communication
Simple explanations of complex tax and compliance matters — we keep you informed at every step of the process.
Complete Document Handling
We prepare, verify and submit all required documents — you just review and approve. No documentation hassle for you.
Post-Filing Support
Notice handling, assessment reply, rectification support and year-round advisory — not just filing and forgetting.
Get It Done in 4 Simple Steps
Share Requirement
Tell us which service you need — ITR, GST, company registration, trademark or anything else.
Document Collection
We tell you exactly what documents are needed and help you arrange everything properly.
Professional Processing
Our CA/CS team processes your filing/registration with accuracy and proper compliance.
Acknowledgment Received
You receive the certificate, acknowledgment or filing confirmation. Support continues afterward.
Trusted by Businesses Across Bihar
"Got my Pvt Ltd company registered in just 12 days. Kamlesh ji handled everything from DSC to PAN to bank account. Very professional and affordable."
"GST registration and monthly returns handled perfectly for 3 years. Zero penalty, zero notice. Best CA service in East Champaran."
"Trademark registered in 8 months without any objection. They did the search, filing and follow-up. Proper guidance throughout."
"ISO 9001 certification for my manufacturing unit done smoothly. Audit was thorough and certificate received without any issues."
"ITR filing for last 3 years done including revised returns. Saved ₹18,000 in tax through proper planning suggested by their CA."
"FSSAI license and Shop Act registration done in 5 days. They also helped with GST and current account opening. One-stop solution."
Common CA / CS Questions
Need CA / CS Professional Help?
Talk to Kamlesh ji — accurate filing, zero penalties, complete support