For high net worth individuals (HNWIs), tax planning is not simply a compliance activity, it is a strategic tool to preserve and grow wealth. With rising scrutiny from HMRC, frozen allowances, and increasingly complex legislation, the value of well-structured planning has never been higher.

HNWIs typically have multiple sources of income: from employment, dividends, property, pensions, or overseas investments. This complexity brings opportunities, but also risk. Without active tax planning, much of that income can be lost to inefficient structuring or missed reliefs.

Using allowances such as the personal allowance, dividend allowance, and savings allowance is key. Where income exceeds £100,000, tapering of allowances becomes relevant. Income splitting between spouses and the use of family investment companies or trusts can help manage liabilities.

The capital gains tax (CGT) annual exemption is now only £3,000 (2025–26). Disposals must be timed carefully, with use of spousal exemptions or crystallising gains across tax years considered.

HNWIs are most exposed to inheritance tax (IHT), which charges 40% on estates above £325,000 (plus any residence nil-rate band). Making lifetime gifts, using trusts, and taking advantage of the exemption for gifts from surplus income can significantly reduce exposure.

Global families must manage UK tax residency and domicile status carefully. The remittance basis may apply to foreign income, but this often requires payment of the remittance basis charge. Changes to domicile treatment post-April 2025 make planning in this area even more important.

Pensions, ISAs, and offshore bonds can provide valuable tax sheltering. For HNWIs, using the annual and lifetime pension allowances efficiently, especially while they remain available, is a core planning task.

In summary, proactive tax planning is about more than saving money. It gives HNWIs confidence, control, and the ability to plan for the future. With HMRC increasing its focus on high earners, reviewing tax affairs annually is no longer optional, it makes good financial sense.

Gross profit margin
This measures the profitability of your core operations by comparing gross profit (sales minus cost of goods sold) to total revenue. A stable or improving gross margin indicates pricing, production, or service delivery is efficient. A declining margin may signal rising costs or pricing issues.

Formula: (Gross Profit ÷ Revenue) × 100

Cash flow
Positive cash flow ensures a business can meet its obligations, pay suppliers and staff, and invest in growth. Even profitable businesses fail without adequate cash. Tracking cash flow (operating, investing, and financing activities) helps prevent liquidity crises.

Monitor: Monthly net cash inflow/outflow and rolling 3-month cash forecast

Customer acquisition cost (CAC)
This shows how much it costs to acquire a new customer. If CAC is rising without a corresponding increase in customer value or retention, it can drain profitability. Ideally, CAC should be lower than the revenue generated by each customer over their lifetime.

Formula: Total Sales and Marketing Costs ÷ Number of New Customers

Net profit margin
This is the bottom line—what remains after all costs, taxes, and interest. It reflects overall efficiency and financial viability. A strong net margin gives room for reinvestment and debt servicing, and signals long-term sustainability.

Formula: (Net Profit ÷ Revenue) × 100

1 July 2025 – Due date for corporation tax due for the year ended 30 September 2024.

6 July 2025 – Complete and submit forms P11D return of benefits and expenses and P11D(b) return of Class 1A NICs.

19 July 2025 – Pay Class 1A NICs (by the 22 July 2025 if paid electronically).

19 July 2025 – PAYE and NIC deductions due for month ended 5 July 2025. (If you pay your tax electronically the due date is 22 July 2025).

19 July 2025 – Filing deadline for the CIS300 monthly return for the month ended 5 July 2025. 

19 July 2025 – CIS tax deducted for the month ended 5 July 2025 is payable by today.

1 August 2025 – Due date for corporation tax due for the year ended 31 October 2024.

19 August 2025 – PAYE and NIC deductions due for month ended 5 August 2025. (If you pay your tax electronically the due date is 22 August 2025)

19 August 2025 – Filing deadline for the CIS300 monthly return for the month ended 5 August 2025. 

19 August 2025 – CIS tax deducted for the month ended 5 August 2025 is payable by today.

Not all VAT-free sales are the same. Understanding the key difference between zero-rated and VAT-exempt supplies could save your business money and prevent costly VAT mistakes.

It's important to understand the distinction between zero-rated and VAT-exempt supplies. While both may appear similar, because no VAT is charged on the sale, the implications for businesses are very different.

If a supply is exempt from VAT, it means no VAT is charged to the customer, and no output VAT is due. However, the downside for businesses is that they cannot reclaim any input VAT (i.e., VAT paid on purchases or expenses related to the exempt activity). This can make exempt activities more expensive to provide, particularly for businesses that incur significant VAT on costs.

Common examples of VAT-exempt supplies include:

• Insurance
• Finance and credit
• Education and training
• Fundraising events run by charities
• Health and welfare services
• Postal services
• Betting and gaming
• Subscriptions to membership organisations
• Selling, leasing, and letting of commercial land and buildings (though this exemption can be waived under certain conditions)

There are exceptions and detailed rules in most of these examples cited above. Whether a supply qualifies as being VAT exempt may depend on how it's structured and who is receiving the service.

Make regular gifts from your income and avoid inheritance tax. If structured properly, surplus income gifts can support loved ones and stay outside your estate without the seven-year survival rule.

Wealthier individuals can benefit from a lesser-known but highly effective IHT exemption for gifts made out of surplus income. This is particularly useful for structured, recurring gifts such as grandparents helping with school fees or contributing to a child's living expenses.

These gifts may be fully exempt from inheritance tax if they meet three key conditions:

1. They form part of the transferor’s normal expenditure,
2. They are made out of the transferor’s income, and
3. The transferor retains enough income to maintain their usual standard of living.

If these criteria are met, the gifts are immediately exempt, they do not require the donor to survive seven years, as is the case with potentially exempt transfers (PETs).

It’s important to note that part of a gift may qualify under this exemption, while the remaining portion may be chargeable or exempt under another rule. However, these rules do not apply to certain types of transfers, including:

• Transfers on death or on the ending of a qualifying interest in possession in a trust,
• Certain deemed PETs under Finance Act 1986,
• Transfers made by close companies,
• Premiums on life insurance policies linked to annuities,
• Transfers of capital assets unless those assets were bought with income specifically for gifting.

The exemption does not override the gift with reservation rules, meaning if the donor retains a benefit from the gifted asset (e.g., continues to live in a gifted property rent-free), the gift may still be treated as part of their estate for IHT purposes.

To take advantage of the income-based exemption, careful consideration has to be given to ensure that these payments form part of the transferor’s normal expenditure and is made out of income and not out of capital. The transferor must also ensure that they are left with enough income for them to maintain their normal standard of living after giving any gifts. HMRC may request evidence such as bank statements, income records, and written intentions to support a claim for this exemption.