Business Interruption Sum Insured Malaysia: How Much Revenue Protection Does Your Factory Need?

Picture this. A fire takes out your main production hall on a Wednesday morning. Property damage is serious but manageable. Your IAR policy will rebuild the shed and replace the machinery. The problem is the 8 months it will take to restore production, during which your revenue falls to zero, your fixed costs keep running, and your customers start qualifying alternative suppliers. That 8-month gap is what Business Interruption (BI) insurance is meant to cover. The question most factory owners cannot answer with confidence is how much BI cover they actually need.

This article is a calculation guide. By the end, you should be able to size your BI sum insured on a defensible basis, pick an indemnity period that matches your recovery realities, and spot the three mistakes that leave most Malaysian factories under-insured at claim time.

We skip the "what is BI" basics (our BI overview guide covers that). This article is for operators who already know they need BI and are now trying to figure out how much.

Why Most Malaysian Factories Are Under-Insured on BI

Property damage sum insured is usually calculated off reinstatement value of buildings and machinery. Those numbers are visible on the fixed asset register and easy to validate. BI sum insured is calculated off gross profit and indemnity period, which are harder to pin down. The result: BI gets estimated, not calculated. When an estimate sits next to an accurate property number, the BI side is usually the one that ends up short.

Our audits of Malaysian factory programmes consistently find BI sum insured under by 20 to 40 percent. The drivers are predictable: outdated revenue baselines, indemnity periods set at 12 months without testing whether 12 is enough, and zero allowance for supplier or customer dependency.

The Correct Basis: Gross Profit, Not Net Profit

The first rule of BI sizing is that "gross profit" in a BI policy is not the gross profit your accountant reports. It is a defined term. It means turnover minus specified working expenses (typically raw materials, purchases of finished goods, carriage, and similar variable costs). Everything else (fixed labour, rent, utilities, depreciation, interest, net profit) sits inside the BI gross profit figure because all of those keep running when production stops.

A common mistake is to insure net profit only. That protects the shareholder return but leaves the factory unable to pay salaries, rent, and utilities during the indemnity period. The factory can still go under even though the BI policy paid out exactly what was claimed.

The Calculation, Step by Step

Here is the standard gross profit calculation for BI sizing, using indicative numbers for a mid-sized Malaysian manufacturer.

Line	Annual Amount (RM)	Notes
Turnover	50,000,000	Audited revenue for most recent full year
Less: Purchases of raw materials and finished goods	(30,000,000)	Uninsured working expenses
Less: Carriage, packaging, bad debts (variable)	(2,000,000)	Uninsured working expenses
BI Gross Profit	18,000,000	Basis for BI sum insured
Indemnity period	18 months	See next section
BI Sum Insured	27,000,000	18 / 12 x RM18M

Note two things about this table. First, the BI sum insured is not equal to annual gross profit. It is scaled by indemnity period. A factory that picks 18 months must insure 1.5x annual gross profit. Second, the uninsured working expenses line is not a theoretical deduction. You must actually be able to stop buying raw materials when production halts. If you have long-term supply contracts that force continued purchases, those purchases are no longer "uninsured working expenses" and must stay inside the gross profit figure.

How to Pick the Indemnity Period

Indemnity period is the maximum time the BI policy will pay benefits after a loss. It is not the same as the expected repair time for the building. It is the time from the date of loss until the business returns to the revenue level it would have achieved had the loss never happened.

Run these questions to size it:

Recovery Milestone	Typical Duration
Debris removal, site clearance, loss adjuster sign-off	1 to 3 months
DBKL / local authority approvals, re-permitting	2 to 4 months
Rebuild civil works	4 to 8 months
Machinery fabrication and shipping (imported plant)	3 to 9 months (often parallel to civil works)
Installation, commissioning, process qualification	1 to 3 months
Customer requalification, ramp-up to pre-loss volume	2 to 6 months

Add the longest plausible path, not the average, and then add a buffer. Most Malaysian factories with imported machinery or regulated product (food, pharma, E&E) should select an indemnity period of 18 to 24 months, not 12. A 12-month indemnity period is almost always too short for regulated manufacturing.

The Three Sizing Mistakes We See Most

Mistake 1: Using Last Year's Revenue Without Forward Adjustment

BI sum insured should reflect the revenue you expect during the policy period and the indemnity period, not the revenue from the last audited year. A factory growing 15 percent year on year that insures on last year's numbers will be under-insured by roughly 15 percent in year one and much more if a claim hits in the second half of the policy. Always forward-project.

Mistake 2: Ignoring Customer Requalification Time

In regulated industries (automotive, aerospace, medical devices, food, pharma), customers do not simply resume orders when you declare yourself operational. They requalify. They audit. They run PPAP samples, IQ/OQ/PQ, or equivalent. This can add 3 to 6 months on top of the physical recovery. If your indemnity period ended at "production restored," the BI policy stops paying while your revenue is still at 30 percent of normal.

Mistake 3: No Supplier or Customer Dependency Cover

A loss at your factory is not the only way BI gets triggered. A loss at a key supplier that cannot deliver your raw material, or at a key customer that cannot take your output, can halt your production without any damage to your own site. Standard BI does not cover this unless you buy a specific supplier or customer extension (sometimes called "specified suppliers" or "specified customers" cover). Factories with concentrated dependencies should always add this.

Additional Items to Include in the Sum Insured

Beyond the core gross profit calculation, a properly-sized BI programme typically includes a few add-ons.

Increased cost of working (ICW): Costs you incur to reduce the loss, for example renting temporary premises, airfreighting replacement machinery, or subcontracting production to a third party. ICW is usually sub-limited separately so it does not erode the main gross profit sum.

Wages: In Malaysia, factory wages are typically inside the gross profit figure because retaining trained workers through a recovery is usually cheaper than re-hiring and re-training. Some factories dual-structure: full wages for the first few months, then a lower allowance. Discuss with your underwriter.

Auditors' fees: Costs of substantiating the BI claim itself. Underwriters usually allow a small dedicated sub-limit for this.

Public authorities clause: If local authority requirements force an extended rebuild (new regulations since the original build), the BI policy should respond to the extended delay. Ask explicitly.

How BI Sum Insured Should Scale With Property Damage Sum Insured

A useful sanity check: compare your BI sum insured to your property damage sum insured. For Malaysian manufacturers, BI is often the larger of the two, especially for mid-sized factories with modest physical assets but high throughput.

Factory Profile	Typical BI : Property Ratio
Heavy plant, low margin commodity (steel, cement, chemicals)	0.5 to 1.0 : 1
Food and beverage manufacturing	1.0 to 1.5 : 1
Electronics and E&E assembly	1.5 to 2.5 : 1
Pharmaceuticals and medical devices	2.0 to 3.5 : 1

If your ratio is far below the typical range for your sector, that is a signal to re-check the calculation. Either gross profit is understated, the indemnity period is too short, or both.

FAQ

What is the difference between BI and loss of profits?

In Malaysian market usage, "loss of profits" and "business interruption" refer to the same thing. The policy section is typically labelled BI, sometimes LOP. Both use the same gross profit basis of cover.

Can I insure only net profit instead of gross profit?

It is technically possible but almost never appropriate. Net profit cover leaves all fixed expenses uninsured, which means the factory cannot pay salaries, rent, or utilities during the indemnity period. Most losses become unrecoverable for the business even when the policy pays exactly as intended.

How long should the indemnity period be?

For most Malaysian manufacturers with imported machinery or regulated output, 18 to 24 months is the realistic range. A 12-month indemnity period is usually too short for anything beyond simple assembly operations. Run your own recovery timeline to check.

Does BI cover cyber incidents that stop production?

Standard BI under fire or IAR is triggered only by covered physical damage. A ransomware attack that halts production is not a physical damage event, so it is not covered under standard BI. A separate cyber BI cover is required.

Does BI cover pandemic shutdowns or government orders?

No. Standard BI is triggered by physical damage from a covered peril. MCO-type shutdowns, pandemics, and most regulatory closures are excluded. A few specialist products address this, but they are not the same as standard BI.

What is "denial of access" cover?

An extension that responds when your factory is undamaged but you cannot access it because an adjacent property suffered a loss. Useful in dense industrial estates where a fire at a neighbouring facility can shut your site for days or weeks.

Will the insurer ask for audited accounts to set the BI sum insured?

Yes, usually. Most underwriters will ask for the last 2 to 3 years of audited accounts and a management projection for the coming year. Providing this up front speeds up quoting and reduces the risk of under-insurance being discovered at claim time.

Foundation Conclusion

BI sum insured is not a guess. It is a calculation, and it should be done with the same rigour as the property damage side. Get the gross profit basis right, pick an indemnity period that reflects your real recovery timeline (not the building repair time), and explicitly address dependency exposures. Factories that do this avoid the most common and most expensive under-insurance gap in Malaysian industrial programmes.

Foundation specialises in industrial property and business interruption cover for Malaysian factories. If you want your current BI section stress-tested against your actual recovery profile, or want help running the calculation from scratch, IAR and fire insurance with BI extensions are core to what we do.

Talk to our risk specialists about sizing BI for your factory

Disclaimer: This article provides general guidance on business interruption insurance available in the Malaysian market as of April 2026. Policy terms, definitions of gross profit, and indemnity period options vary by insurer and risk profile. Always review your specific policy wording and consult a qualified insurance professional before making coverage decisions.