IRS
TERMInternal Revenue Service
United States federal tax authority responsible for federal tax administration.
Flagship reference
Global Fiscalisation Terminology Reference
A common language for fiscalisation, digital tax control, e-invoicing and e-reporting — built to make cross-jurisdiction discussion clearer and more precise.
144Jurisdictions
2867Terms
V1/2026Latest edition
Why the GFTR matters
Supporting a common language for global fiscalisation
Different jurisdictions use different terms for similar concepts. The GFTR brings clarity by providing consistent, evidence-based definitions and jurisdictional context — helping governments, tax authorities, businesses and technology providers communicate more effectively.
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2,867 terms
IRS
TERMInland Revenue Services
Inland Revenue Services established under the Tax Administration Act and responsible for operating the IRS System under the TIMS Regulations.
IRS System
TERMIRS Electronic Information System
Electronic information system operated by IRS to connect with EFDs, authenticate SDCs, receive, record, analyse and store fiscal data, manage secure elements and digital certificates, and enable verification of fiscal data.
IRSP
TERMInvoiceNow-Ready Solution Provider
IMDA-accredited solution provider offering accounting, finance or ERP solutions connected to the InvoiceNow network through accredited Access Points.
IS
TERMImposto Seletivo | Selective Tax
Brazilian selective tax introduced under the consumption-tax reform for relevant goods and services within the reformed indirect-tax framework.
IS EFA
TERMInformačný systém elektronickej fakturácie | Electronic Invoicing Information System
Slovak electronic-invoicing information-system concept associated with public-sector guaranteed electronic invoicing and earlier national e-invoicing implementation arrangements.
ISDOC
TERMInformation System Document
Czech electronic invoice format used for structured electronic invoicing, including public-procurement e-invoicing and national e-invoice exchange practice.
ISDOCX
TERMInformation System Document Package
Package format associated with ISDOC electronic invoicing, used for exchanging an ISDOC document together with related attachments.
ISFU
TERMInformacijski sistem finančne uprave | Information System of the Financial Administration
FURS information system used for receiving, processing and responding to fiscal-verification messages submitted by taxpayers through the prescribed technical interface.
ISPC
TERMImposto Simplificado para Pequenos Contribuintes | Simplified Tax for Small Taxpayers
Mozambique’s simplified tax regime for small taxpayers, relevant to the fiscal-machine framework and taxpayer segmentation in fiscal-control and invoice-data reporting contexts.
Who is it for
Who is it for
Governments & tax authorities
Useful for teams shaping fiscal policy, compliance architecture and regulatory communication.
Technology providers
Supports shared interpretation across product, compliance, implementation and commercial teams.
Researchers & analysts
Provides a reference point for comparative work, evidence synthesis and terminology alignment.
Associations & advisers
Helps explain country-specific language and reduce ambiguity in cross-border discussions.
How the GFTR supports work
How the GFTR supports work
Stronger cross-jurisdiction dialogue
Supports consistent understanding across different regulatory frameworks.
Better policy and implementation
Helps align discussions between governments, tax authorities and the private sector.
Practical, evidence-based definitions
Built from real-world systems and authoritative sources across jurisdictions.
A living reference
Regularly updated to reflect ongoing regulatory developments and emerging practices.