The Danish National Tax Court confirmed that extraordinary VAT reassessment is permissible when gross negligence is proven. In a case involving a Danish airline, the court upheld the tax authorities’ findings that the company used incorrect input VAT deduction percentages, failed mandatory year‑end adjustments, and understated its liability. The decision clarifies that repeated errors and prohibited energy‑tax deductions justify extraordinary reassessment.

The Nicaraguan Directorate General of Revenue issued Notice No. 010-01-2026 on Jan. 16, 2026, setting a Jan. 20 deadline for large taxpayers (GRACOS) to pay advance VAT for the first half of January. Failure to meet the deadline could impact tax solvency. This guidance applies to large taxpayers in Nicaragua.

The Slovak Financial Administration released Guide No. 1/DPH/2026/I on January 14, 2026, outlining amendments to the VAT Act. Key provisions include mandatory electronic invoicing for domestic supplies from 1 January 2027 to 30 June 2030 and an option for the tax office to require customers to pay VAT directly to the tax administrator’s account if a supplier is suspected of non‑payment. The guidance applies to all Slovak taxpayers engaged in domestic supply of goods and services.

On January 14, the Lithuanian State Tax Inspectorate released a summary explanation outlining VAT filing requirements for the small business regime. The guidance specifies that returns must be filed electronically via the online portal and due by the 25th of the month following the tax period in which VAT obligations arose or services were supplied in another EU member state. It also confirms that small business regime taxpayers in other EU member states must comply with the same electronic filing requirement.

Chile's tax authority issued Letter No. 24 on Jan. 7 clarifying that VAT payers receiving taxable services from nonresident providers must issue purchase invoices and pay VAT. The letter also requires retroactive invoicing if invoices are not issued in the same tax period as the remuneration. These guidance rules affect Chilean businesses dealing with foreign service providers.

On 14 January 2026 the Italian Revenue Agency issued Letter No. 4/2026 clarifying that an artistic foundry’s activity is a provision of services, not artwork sales. Consequently the 5 % reduced VAT rate does not apply because the foundry is not the author or rights holder of the artworks it produces. The foundry must therefore charge the standard VAT rate on its services.

Mexico’s tax authority, SAT, has issued Rule 2.9.21 under RMF 2026, mandating digital platforms to provide real‑time, permanent online access to transaction records. The rule requires next‑day data availability, a five‑year searchable archive, and a formal request by April 30 2026, with detailed data obligations for both service providers and intermediary platforms.

The VAT Refunds Manual is an HMRC internal guidance document outlining procedures for traders to claim VAT refunds. It covers eligibility, claim requirements, time limits, verification, handling of abusive or unjust enrichment claims, end‑customer refund claims, refusal procedures, appeals, and penalties.

The Czech Tax Agency clarified input VAT deduction rules for acquisitions of long‑term assets effective 1 January 2025. The guidance outlines procedures for partial deductions, incorporates the EU cross‑border regime for small enterprises, and sets a deadline for claiming deductions by the end of the second calendar year after the relevant year.

This guidance handbook from HMRC explains customs authorisations in detail, covering their purpose, eligibility, application procedures, compliance requirements, guarantee types, authorisation management, appeals, renewal, and the legal framework. It serves as a technical reference for businesses and customs officials to correctly apply for and manage customs authorisations.

This IRAS guidance outlines the steps for GST registration in Singapore, including e‑learning requirements, GIRO processing, effective dates, and special provisions for overseas entities. It details processing timelines, backdating rules for compulsory registration, and agent appointment obligations for foreign suppliers.

This IRAS guidance explains the steps and requirements for completing Singapore’s GST F1 registration form, including eligibility checks, mandatory e-learning, and technical prerequisites such as InvoiceNow readiness. It also outlines the 14‑day draft retention period and the prohibition on collecting GST before approval.

New Zealand GST invoices must be issued within 27 days of the supply and retained for at least seven years. They must contain specific details such as supplier and customer information, invoice date, description, taxable amount, GST, and gross amount. Invoices below NZD 1,000 may omit customer details and detailed GST calculations, and no tax invoice is required for supplies of NZD 50 or less.

New Zealand’s Inland Revenue explains how e‑invoicing works, the benefits, and the changes to GST record‑keeping that took effect on 1 April 2023. The guidance notes that e‑invoices are exchanged via the Peppol network and that suppliers are encouraged to send them instead of PDFs.

Washington State Department of Revenue has issued updated guidance for businesses seeking a direct pay permit for sales and use tax. The guidance outlines eligibility thresholds ($240,000 cumulative liability or $10M taxable purchases), application process, reporting obligations, and limitations on permit use and transfer. Businesses must comply with these rules to claim a five‑year deduction on retail sales tax.

Missouri's Department of Revenue clarified that contractors who purchase materials for real property improvements are considered the final user, making those sales taxable. Contractors cannot charge sales tax on the lump sum contract price but may pass the cost of sales tax for materials to the homeowner. The ruling, Letter Ruling No. LR 8374, was issued on November 24, 2025.

The Court of Arnhem-Leeuwarden ruled that X BV, G BV and M BV do not form a VAT fiscal unity because there is no financial interconnection – no shareholder holds a majority in X BV and the parties did not act as a single group. The decision cites the 1979 HR precedent on financial control and confirms that VAT adjustments imposed on X BV for services to M BV are valid.

The South Korean National Tax Service released a press statement outlining new VAT filing and payment deadlines. The main deadlines are Jan. 26 for filing and paying returns for the July–December 2025 period, and March 26 for an extended payment deadline for certain SMEs. Simplified taxpayers and businesses facing financial difficulties also receive automatic or optional extensions.

The OECD has released guidance for policymakers on designing mandates for real-time reporting of value‑added tax transactions. The guidance is aimed at countries that are considering or adopting real‑time reporting systems and outlines key principles and considerations for effective implementation.

The OECD has released guidance to help policymakers design real‑time reporting mandates for VAT transactions. The guidance outlines principles for implementing real‑time data submission to tax authorities, a feature increasingly adopted by member states. It aims to standardise reporting requirements and improve compliance.