Corporation Tax
How Corporation Tax marginal relief works - and why most calculators get it wrong
The 25% main rate only applies above £250,000. Between £50,000 and £250,000 there's a sliding scale, and associated companies make it much more complicated.
26 May 2026 · 6 min read
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Tax Planning
Salary vs dividends in 2025/26: the optimal split has changed
With employer NI rising to 15% and the threshold dropping to £5,000, the maths for director extraction has shifted. Here's what's optimal now.
19 May 2026 · 8 min read
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Cash Flow
Why profitable businesses run out of cash: how to see it coming
Profit and cash are not the same thing. A business can show a healthy P&L and still hit a cash crisis in the same quarter. Here's the mechanics.
12 May 2026 · 5 min read
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Tax Planning
How to reduce your Corporation Tax bill legally: UK limited company guide
Pension contributions, capital allowances, R&D relief, loss carry-back, the legitimate ways UK limited companies reduce their Corporation Tax bill.
5 May 2026 · 8 min read
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Corporation Tax
Why is my Corporation Tax bill higher than expected?
Disallowable expenses, the depreciation gap, associated companies reducing your thresholds - the most common reasons the bill comes in above the P&L estimate.
28 Apr 2026 · 6 min read
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Corporation Tax
When is Corporation Tax due? UK payment deadlines explained
The 9 months and 1 day rule, large company quarterly instalments, CT600 filing deadlines, and the penalties HMRC charges for missing them.
21 Apr 2026 · 5 min read
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Corporation Tax
Can you pay Corporation Tax in instalments?
Quarterly instalment payments for large companies, Time to Pay arrangements for companies that can't pay, and how to approach HMRC before the deadline.
14 Apr 2026 · 5 min read
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Corporation Tax
What triggers a Corporation Tax investigation?
HMRC's Connect system, the filing patterns that flag companies for enquiry, aspect vs full enquiry, and what to do if one opens.
7 Apr 2026 · 6 min read
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