Relevant authorities for collecting excess sales tax vary by jurisdiction. Here are some key authorities:

National Authorities For Collecting of Excess Sales Tax

1. Federal Board of Revenue (FBR) (Pakistan): Primary tax authority.
2. Internal Revenue Service (IRS) (USA): Collects federal taxes, including sales tax.
3. Canada Revenue Agency (CRA) (Canada): Collects federal and provincial taxes.
4. Australian Taxation Office (ATO) (Australia): Collects federal taxes.
5. Her Majesty’s Revenue and Customs (HMRC) (UK): Collects national taxes.

State/Provincial Authorities For Collecting of Excess Sales Tax

1. State Tax Departments (USA): Collect state sales tax.
2. Provincial Revenue Departments (Canada): Collect provincial sales tax.
3. State Revenue Offices (Australia): Collect state taxes.
4. Devolved Tax Authorities (UK): Collect national and local taxes.

Local Authorities For Collecting of Excess Sales Tax

1. Local Tax Offices (USA): Collect local sales tax.
2. Municipal Revenue Departments (Canada): Collect municipal taxes.
3. Council Tax Offices (UK): Collect local taxes.

Online Platforms For Collecting of Excess Sales Tax

1. Tax Authority Websites: Official websites for tax payments and inquiries.
2. E-Filing Portals: Online platforms for tax filing and payment.

Contact Information

1. FBR (Pakistan): (link unavailable)
2. IRS (USA): (link unavailable)
3. CRA (Canada): (link unavailable)
4. ATO (Australia): (link unavailable)
5. HMRC (UK): (link unavailable)

Best Practices For Collecting of Excess Sales Tax

1. Verify tax authority contact information.
2. Consult tax professionals for complex cases.
3. Ensure timely payments to avoid penalties.
4. Maintain accurate records.
5. Monitor tax authority updates and changes.

Consult relevant tax authorities or professionals for specific guidance on collecting excess sales tax.