Onesource | Mastersaf Solution


More and more, the challenges in Tax Management have demanded the full attention of tax managers. To avoid fines and assessments, companies must be prepared for the rapid changes and new requirements of the Treasury.

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Through a partnership with the Thomson Reuters Tax & Accounting business unit, GSW markets, deploys and integrates ONESOURCE | MASTERSAF, a reference in the national market, besides offering complementary services and products that extract the full potential of the tools.


ONESOURCE solutions | MASTERSAF covers practically all fiscal, tax and accounting operations, from the issuance and storage of electronic fiscal documents, to the generation and proper validation of all tax obligations, guaranteeing on-time deliveries with reliable information, in an integrated way to the ERP.


MasterSaf DW

Generation and management of obligations in the spheres: Municipal, State and Federal.

The most comprehensive tax and tax software, integrated with leading ERPs in the market and focused on the needs of large companies.

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MasterSaf TAXAnalalyser

Validation and Audit for full tax and tax compliance

Anticipate to FISCO's analysis, ensuring the tax information quality and compliance, as well as more security and a lower risk of notices.

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MasterSaf DFE

Technology and intelligence in the management of electronic tax documents.

Process improvements that will mitigate risks and errors, increase control and mainly reduce costs and time in physical and fiscal receipt.

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oneSource ECF

Be in compliance with the Tax Accounting Bookkeeping.

The new requirements resulting from the TAB are aiming at a greater traceability, based on the accounting information, which can generate significant impacts on companies.

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