VAT/Sales Tax Registration Agency

Bringing the world closer together.

Let Opti take care of your VAT registration. Our expert team handles all the complicated procedures.
We are your reliable partner to accelerate your global expansion.

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VAT registration professionals who support cross-border business

In recent years, with the expansion of cross-border e-commerce and global supply chains, VAT registration requirements in various countries have become stricter.
With the gradual introduction of an electronic invoice system in the EU from 2024 and the UK's own VAT system after Brexit, tax compliance in various countries is becoming increasingly important for large companies. The EU is phasing in an electronic invoice system from 2024 onward.

This is the best choice for people like you.

Companies considering new entry into overseas markets

Companies that sell products and digital services to countries around the world

Companies wishing to centralize VAT registration in multiple countries

Companies wishing to mitigate local tax compliance risks

Companies wishing to strengthen their group-wide indirect tax governance

Service Strengths

Support for more than 170 countries

We have experience in VAT and sales tax registration in more than 170 countries around the world, including Europe, the UK, Asia, and the United States. Our network of local partners are well versed in the tax systems of each country, allowing you to complete registration without hesitation.

Lump-sum representation by specialists

Our tax specialists handle the entire process on your behalf, from preparation of necessary documents to application to the tax authorities and question-and-answer sessions with the authorities. You can concentrate on your core business.

Visualization with Tax Tech

Compatible with the latest tax system revisions and electronic invoice systems in various countries. Minimize tax risks and expand your global business with peace of mind.

Service Details

Opti's VAT registration service provides systematic support for obtaining the VAT number necessary for your overseas business development.
First, our dedicated staff members interview your company about your business and transaction scheme, and propose the most appropriate country for registration.
We provide consistent support from preparation of necessary documents, application to local tax authorities, Q&A with the authorities, and initial tax filing after obtaining a VAT number.
Progress can be monitored in real time through the MyOpti portal, and registration in multiple countries can be centrally managed.


For Large Corporations VAT Registration Service Conceptual Diagram Large and listed companies Cross-border EC to multiple countries Large-scale overseas expansion Requests OPTI In-depth understanding of your industry and business type Document preparation and application on behalf of the client Support for multiple countries and large scale Dedicated staff assigned Application for registration Tax authorities in each country EU, UK, US, etc. Simultaneous support for multiple countries Issuance of VAT number and completion of registration (each country) Completion of VAT number acquisition ✓ Manage VAT numbers for multiple countries at one time. From application to completion: 1 month at the earliest, up to 6 months for multiple countries

Overseas Tax Requirement Definition and Analysis

From pre-entry research to requirement definition, we support your business strategy with expertise that surpasses even the Big 4.

Tax system and e-document implementation

We complete the implementation and systemization of complex taxation, including the implementation of Avalara and other systems and Peppol compliance.

Building controls in 100 countries around the world

We build robust controls that protect corporate trust by investigating past risks and calculating penalties.

High-quality tax return practical representation

We provide hands-on support for practical operations from registration to filing of VAT and sales tax returns for all countries around the world.

Frequently Asked Questions

Category Title

Q.

How long does it take to register for VAT?

A.

It usually takes from 3 to 6 months, depending on the country. OPTi will help you obtain the certificate in the shortest possible time.

Q.

In which countries can I register for VAT?

A.

We support VAT, sales tax and GST registration in over 170 countries worldwide. Please contact us for more details.

Q.

Can I also request a declaration after VAT registration?

A.

Yes, OPTi will also file periodic tax returns on your behalf after VAT registration. We can flexibly handle monthly, quarterly, annual, etc.

Q.

How much does it cost?

A.

It depends on the country of registration and the service. Please feel free to contact us for a quote.

Q.

Can you respond in Japanese?

A.

Yes, all communication will be done in Japanese. OPTi will also handle all communication with local tax authorities on your behalf.

Flow up to the start of service

  • 01

    Contact us
    Please feel free to contact us first.
    Our dedicated staff will listen to your company's situation.

  • 02

    Scheme Analysis
    We analyze your trading scheme and suggest the most appropriate country of registration.

  • 03

    Document Preparation
    We will provide you with a list of required documents and assist you in preparing them.

  • 04

    Application on behalf of
    We handle everything from application to tax authorities to questions and answers.

  • 05

    Obtaining a VAT number
    After obtaining a VAT number, we will provide consistent support up to the first tax return.

Why choose OPTi?

OPTi Corporation is a specialized international indirect tax firm, providing VAT, sales tax, and GST registration and filing services in more than 170 countries around the world.
We have extensive experience in Europe, the UK, and Asia, and support a wide range of clients from major corporations to cross-border e-commerce businesses.
With our global network of local partners and the latest tax system knowledge, we can certainly support your global business from a tax perspective.

Our Expert Team Is Here to Help

For International Tax Matters, Turn to OPTI

Have questions about tax challenges, VAT registration, or tax filing in overseas markets? Get in touch — we'll find the right solution for you.

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