How to estimate key person insurance cover for an Australian business

The information on this website is general in nature and does not take into account your objectives, financial situation, or needs. Consider seeking personal advice from a licensed adviser before acting on any information.

Estimating a key person insurance cover amount is not simply a matter of choosing a round number or matching a person's salary. For many Australian businesses, the useful question is: what financial pressure could the business face if this person died, became seriously ill or was otherwise unable to work under the terms of the policy?

This article provides a general framework for thinking through that question. It is not personal financial advice, tax advice or legal advice. The right cover amount, policy structure, availability and premium will depend on the business, the insured person, insurer criteria and the advice you receive from appropriately qualified professionals.

If you are still clarifying what this type of cover does, you may want to start with the broader key person insurance overview before estimating a cover amount.

What should key person insurance cover be based on?

A key person insurance cover amount should generally be linked to the business impact of losing that person's contribution for a period of time. That impact may include lost revenue, reduced profit, recruitment costs, project disruption, debt obligations and the cost of keeping the business stable while it adapts.

The aim is not to place a value on the person themselves. It is to estimate the financial support the business may need to manage a difficult transition.

A practical starting formula is:

Estimated cover amount = expected revenue or profit impact + replacement and transition costs + debt or funding obligations + continuity buffer - existing reserves or other relevant cover.

This formula is deliberately broad. A professional adviser, accountant or broker may refine it depending on the business purpose of the policy, ownership structure, taxation treatment, insurer requirements and the type of cover being considered.

Step 1: Identify who is genuinely key to the business

Before estimating a cover amount, define why the person is critical. A key person may be a founder, director, senior executive, technical specialist, lead salesperson, relationship manager or another employee whose absence could materially affect the business.

Useful questions include:

• Does this person directly generate a significant portion of revenue?
• Do they hold essential technical, operational or regulatory knowledge?
• Would major clients, suppliers, lenders or investors be concerned if they were no longer involved?
• Would projects, contracts or funding arrangements be disrupted?
• How long would it realistically take to replace their skills and relationships?

For more context on the types of business disruption key person cover is designed to address, see Key Person Insurance: Protecting Your Most Valuable Assets.

Step 2: Estimate the revenue or profit impact

One of the largest inputs in a key person insurance cover calculation is the financial contribution the person makes to the business. Depending on their role, this may be direct revenue, gross profit, net profit, client retention, project delivery or operational efficiency.

For example, a senior salesperson may have an identifiable book of clients or sales pipeline. A managing director may not directly sell, but may influence revenue through strategy, investor confidence and major relationships. A technical founder may be central to product development, service delivery or intellectual property.

Businesses commonly consider:

• Direct revenue at risk: sales, contracts or client relationships that may be affected.
• Profit contribution: the margin or profit linked to the person's work, rather than revenue alone.
• Recovery period: how many months or years the business may need to return to normal trading.
• Client retention risk: whether customers may leave if the person is unavailable.
• Project delays: whether unfinished work may be delayed, cancelled or delivered at higher cost.

It may be more realistic to estimate the impact over a defined recovery period rather than assuming the loss continues indefinitely. For some businesses this could be months; for others, particularly where specialist knowledge or founder relationships are involved, the transition could take longer.

Step 3: Add recruitment, replacement and training costs

Replacing a key person can involve more than a recruitment fee. The business may need to advertise, use recruiters, pay interim contractors, offer a competitive salary package, train a replacement and absorb a period of reduced productivity.

Costs to consider may include:

• recruitment and search costs;
• temporary management or contractor support;
• training, onboarding and handover costs;
• lost productivity while the replacement becomes effective;
• additional salaries or incentives needed to attract suitable talent;
• travel, relocation or specialist consulting costs where relevant.

Where the person has deep business knowledge or client relationships, the replacement cost may not be limited to a direct hiring expense. The business may also need funds to stabilise operations during the transition.

Step 4: Consider business debts and funding obligations

Key person insurance is often considered where lenders, investors or business partners are concerned about continuity. If the business has loans, overdrafts, equipment finance, trade credit or other obligations that rely heavily on the key person's involvement, those commitments may influence the cover amount.

Relevant questions include:

• Would a lender require debt to be reduced or repaid if the key person was no longer involved?
• Would the business need working capital to meet payroll, rent, supplier invoices or tax obligations?
• Are personal guarantees, director loans or shareholder loans involved?
• Would investor confidence or future funding be affected?
• Would the business need cash reserves to avoid forced asset sales?

Not every debt should automatically be insured in full under a key person policy. The amount should reflect the business's risk management plan, existing cash reserves, loan terms and professional advice.

Step 5: Allow for continuity and restructuring costs

A key person's absence may trigger broader continuity costs. These can include stabilising management, communicating with customers, hiring external consultants, protecting intellectual property, renegotiating contracts or restructuring the business.

For smaller businesses, a founder or director may perform multiple functions that are not obvious in a job description. They may approve finance, manage major clients, supervise staff, oversee compliance and make strategic decisions. Replacing those functions may require several people or external advisers.

A continuity allowance can help the business avoid making rushed decisions under pressure. However, the allowance should be reasonable and supported by a clear business rationale, rather than being an arbitrary buffer.

Step 6: Subtract existing resources and overlapping cover

The gross financial impact is not always the same as the insurance amount required. A business may already have cash reserves, retained earnings, other insurance, shareholder funding arrangements or succession plans that reduce the amount of key person insurance needed.

Consider whether the business already has:

• cash reserves or an emergency fund;
• business interruption or other insurance that may respond to specific events;
• access to replacement management or internal successors;
• shareholder agreements or buy-sell arrangements;
• credit facilities that would remain available;
• documented processes that reduce dependency on one person.

Be careful not to double count the same need across multiple policies. Key person cover, buy-sell insurance, loan protection and personal life insurance can serve different purposes. The policy owner, beneficiary, purpose and tax treatment may differ.

A simple key person insurance cover calculation framework

The table below shows a practical way to organise the estimate. It is not a substitute for advice, but it can help you prepare for a quote discussion.

You can use a supplied key person insurance calculator or worksheet as a starting point, but any result should be reviewed against the business's actual circumstances. Calculator outputs may not account for all insurer requirements, tax considerations, exclusions, ownership structures or business-specific risks.

Example of how the framework may work

Consider a business that depends heavily on a managing director who maintains major customer relationships and oversees finance. The business may estimate:

• a likely reduction in profit during a transition period;
• the cost of interim management support;
• recruitment and onboarding costs for a replacement executive;
• working capital needed to reassure staff, suppliers and lenders;
• existing cash reserves that could offset part of the need.

The final cover amount would not automatically equal the total revenue of the business or the director's salary. It would be based on the expected financial gap the business wants the policy to help address, subject to insurer acceptance and underwriting.

Common methods businesses use to estimate cover

There is no single method that suits every business. Common approaches include:

Contribution-based method

This method estimates the key person's contribution to revenue or profit and applies a recovery period. It may be useful where the person has a measurable sales, client or production impact.

Replacement-cost method

This method focuses on the cost to recruit, train and support a replacement. It may be useful where the main risk is the cost and time involved in restoring capability.

Debt or capital-protection method

This method looks at business debts, funding obligations and working capital needs. It may be relevant where lenders, investors or business partners expect continuity funding.

Blended method

Many businesses use a combination of these methods. For example, the estimate may include profit impact, replacement costs and debt obligations, then subtract existing reserves.

How premiums and policy terms may affect the final decision

The amount of cover you would like and the amount an insurer is willing to offer may not always be the same. Insurers generally consider factors such as the insured person's age, health, occupation, duties, smoking status, sum insured, policy type and underwriting information. They may also consider whether the requested cover amount is financially justified.

Premiums may also vary depending on the level of cover, policy features, waiting periods or benefit definitions where relevant. A higher sum insured may provide more financial support if a valid claim is accepted, but it may also cost more. The final decision should balance affordability, business risk and the consequences of being underinsured or overinsured.

Policy terms, exclusions, definitions and claims requirements matter. Businesses should read the product disclosure statement and policy documents carefully and seek advice where needed.

When to review the cover amount

A key person insurance cover amount should not be set and forgotten. Review it when the business changes materially, such as when:

• revenue, profit or staffing levels change significantly;
• the business takes on new debt or repays major debt;
• a key person's responsibilities expand or reduce;
• ownership changes or new investors come in;
• major contracts are won or lost;
• succession plans improve or weaken;
• the business enters a new market or restructures.

An annual review can help keep the cover aligned with the business's risk profile, although the appropriate timing depends on the business and policy arrangements.

Questions to discuss with an adviser, broker or accountant

Because key person insurance can interact with tax, accounting, business succession and legal structures, professional input can be valuable. You may wish to ask:

• What specific financial loss is this policy intended to cover?
• Who should own the policy and receive any benefit?
• Is the cover for revenue protection, debt protection, capital protection or another purpose?
• How should the business document the reason for the cover amount?
• How could premiums and claim proceeds be treated for tax purposes?
• Does the business also need buy-sell, shareholder or personal cover arrangements?
• How often should the amount be reviewed?

You can also review the supplied broker information if you want to understand how a broker may help compare options and explain policy terms. Any recommendation should be based on your business's needs, financial position and relevant professional advice.

Key takeaways

Estimating a key person insurance cover amount is about understanding the business impact of losing a critical person's contribution. A useful estimate usually considers revenue or profit impact, replacement costs, debt obligations, continuity funding and existing resources.

The most appropriate amount will vary between businesses. Rather than relying on a generic multiple or a single calculator result, build a clear rationale and review it regularly. This can help ensure any quote discussion is more focused, transparent and aligned with the actual risks the business is trying to manage.

Published: Monday, 5th Oct 2026
Author: Paige Estritori