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Financial statements audits
Financial statement audits
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Compliance audits
Compliance audits
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Compilations and reviews
Compilations and audit
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Agreed-upon procedures
Agreed-upon procedures
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Corporate and business tax
Our trusted teams can prepare corporate tax files and ruling requests, support you with deferrals, accounting procedures and legitimate tax benefits.
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International tax
Our teams have in-depth knowledge of the relationship between domestic and international tax laws.
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Tax compliance
Business Tax
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Global mobility services
Through our global organisation of member firms, we support both companies and individuals, providing insightful solutions to minimise the tax burden for both parties.
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Sales and use tax and indirect taxes
SUT/ VAT & indirect taxes
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Tax incentives program
Tax incentives program
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Transfer Pricing Study
The laws surrounding transfer pricing are becoming ever more complex, as tax affairs of multinational companies are facing scrutiny from media, regulators and the public

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Business consulting
Our business consulting services can help you improve your operational performance and productivity, adding value throughout your growth life cycle.
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Business Risk Advisory
Risk is inevitable but manageable. We deliver relevant, timely and practical advices to aid organizations manage risk and improve business performance. We can help you identify, understand and manage potential risks to safeguard your business and comply with regulatory requirements.
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Technology Advisory
We provide comprehensive solutions to safeguard your business and ensure operational resilience and compliance. Our expert team offers a range of technology advisory services designed to address your cybersecurity needs, enhance business continuity, and manage security effectively.
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Transactional advisory services
Transactions are significant events in the life of a business – a successful deal that can have a lasting impact on the future shape of the organizations involved. Because the stakes are high for both buyers and sellers, experience, determination and pragmatism are required to bring deals safely through to conclusion.
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Forensic and investigative services
At Grant Thornton, we have a wealth of knowledge in forensic services and can support you with issues such as dispute resolution, fraud and insurance claims.

On January 27, 2016, the Puerto Rico Treasury Department (“PRTD”) unveiled the Unified Internal Revenue System (“SURI”, for its acronym in Spanish) as means to modernize and improve the PRTD’s administration of tax revenue and supervisory duties. By consolidating its various processing systems into a single platform, the agency is allowed a fully integrated snapshot of every taxpayer’s accounts.
From the outset, the PRTD’s plan was for SURI to be implemented in three (3) separate phases covering the following matters:
- Phase 1: Value Added Tax, online services, tax return filings and payment modules;
- Phase 2: the integration of corporate and other business-related taxes; and
- Phase 3: integration of individuals, withholdings and Gift & Estate Taxes.
In light of the VAT’s rise-and-fall, the subsequent changes to the Sales & Use Tax regime, the change in administration and the inherent challenges to any transformational endeavor, the above referenced Phases experienced some revisions. To properly apprise taxpayers of the current components of the revised Phases and their corresponding launch dates, on October 2, 2018 the Internal Revenue Informative Bulletin No. 18-16 was issued.
Internal Revenue Informative Bulletin No. 18-16 (“IB 18-16”)
Pursuant to IB 18-16, the revised Phases are:
Phase | Tax | Launch date |
I | Sales & Use Tax | Fully implemented |
II |
Withholding at source Gift & Estate Taxes Excise Taxes |
December 10, 2018 |
III | Income Taxes | December 2019 |
In particular, with the fast-approaching implementation date for Phase II, IB 18-16 enumerates the type of returns that will now be handled through SURI.
Withholding at Source
- deposits of taxes withheld at source
- filing of Employer’s Quarterly Return of Income Tax Withheld (Form 499 R-1B)
- filing of Withholding Statement and Amendments (Forms 499R-2/W-2PR, 499R-2c/W-2cPR and 499 R-3
- filing of Informative Returns (Forms 480.5, 480.6A, 480.6B, 480.6B.1, 480.6C, 480.30, 480.6D, 480.7, 480.7A, 480.7B, 480.7C and 480.7D)
- filing of Informative Returns for low-through entities and trusts, and workers corporation (Forms 480.6 EC, 480.6 F and 480.6 CPT)
Gift and Estate Taxes
- filing of Estate Tax Informative Return and the issuance of the corresponding Certificate of Lien Cancellation
- filing of Gift Tax Informative Return and the issuance of the corresponding Certificate of Lien Cancellation
- other related petitions
Excise Taxes
- filing and payment of Excise Tax Declaration
- filing and payment of the monthly Excise Tax Return
- filing and payment of Excise Tax on alcohol and spirits
- request for manufacturer’s identification number
- request and payment of Internal Revenue licenses
- requests for permits, exemptions and other authorizations related to the importation of alcohol and spirits and tobacco-derived products
- management of electronic inventory on bonded warehouses.
IB 18-16 notes that further publications will be released to instruct taxpayers on the registration process for each of the aforementioned taxes and/or forms within SURI.