Stamp duty land tax has its own compliance and appeal regime—separate from income tax. This guide covers the most common SDLT disputes, how to correct returns, challenge HMRC decisions, and appeal penalties.
VAT penalties work differently from income tax—including a pay-first rule that can block your appeal. This guide covers default surcharges, the new penalty regime, best judgment assessments, the Steptoe defence, and how to apply for hardship.
Filing a tax appeal does not automatically postpone payment—HMRC can still enforce the full amount. Here's how to apply for postponement under section 55, the 30-day deadline, and what happens to interest and penalties while you wait.
HMRC can assess additional tax years after you filed your return—but only if strict conditions are met. Here's what a discovery assessment is, when HMRC can and cannot make one, and the five grounds you can use to challenge it.
HMRC missed deadline after deadline and offered no explanation. The Supreme Court upheld the tribunal's power to bar them from the proceedings entirely. Here's what BPP Holdings means for your case—and the same rules that apply to you.
You can challenge a First-tier Tribunal decision at the Upper Tribunal—but only on a point of law, and the costs rules change fundamentally. If you lose, you will most likely pay HMRC's legal costs. Here's the full process, with every deadline and form you need.
If you received a tax tribunal decision without full reasons, you have just 14 days to request them—down from 28 days since March 2026. Here's how to protect your right to appeal.
In most FTT cases each side pays its own costs. But when one side has been unreasonable, the tribunal can shift them. Here's how the test works, what the case law says, and how to make or defend a costs application.
HMRC charges interest at 7.75% on unpaid tax—running from the original due date, not from when you found out. Here's how the calculation works, why it differs from penalties, and what you can do about it.
From January 2023 for VAT and April 2026 for income tax, HMRC uses a new penalty system: points for late filing, percentage-based charges for late payment. Here's how it works, what the tribunal has already decided, and what you can do about it.
Every late tax appeal is judged against the Martland three-stage test. Here's the full story—and what it means if you've missed your deadline.
HMRC says your excuse isn't good enough. The Upper Tribunal set out a four-step test that changed the game—and warned HMRC their narrow approach could cost them. Here's what the landmark Perrin decision means for your penalty appeal.