Total Permanent Disability (TPD) is a phrase used in the insurance industry and in law. Generally speaking, it means that because of a sickness or injury, a person is unable to work in their own or any occupation for which they are suited by training, education, or experience. An individual or group of individuals can insure themselves against it through a disability insurance policy, as part of a life insurance package or through worker's compensation insurance.
Ballentine's Law Dictionary defines a permanent disability is one that "will remain with a person throughout" his or her lifetime, or he or she will not recover, or "that in all possibility, will continue indefinitely." 
Total and Permanent Disablement Insurance is designed to provide a lump sum benefit to the life insured in the event of a medically diagnosed event that renders the claimant unable to work again. TPD Insurance is generally used to cover debts and the ongoing living expenses of an individual to reduce the ongoing financial burden of loss of income.
There are three main types and definitions of TPD Insurance:
The Own Occupation definition is generally considered to provide the greatest level of protection, with the Non-Occupational TPD requiring the greatest level of disablement before a claim will be considered.
TPD Insurance in Australia can be owned and paid for from superannuation accounts. When TPD Insurance is held in Superannuation, the 'Any Occupation' definition is normally offered as the level of disablement required by Superannuation Law is based on 'Any Occupation.'
TPD Insurance when taken for personal protection is generally not tax deductible and claim payments are not taxable. When TPD Insurance is held in superannuation however the benefit is generally taxed when paid.
The maximum level of cover normally available with one insurer in Australia is generally $3 - $5 million with the oldest entry ages varying between 55 - 62.
TPD Insurance is normally underwritten on application and factors such as medical history, family history, past times and unusual occupational risk factors can result in a policy being offered on with exclusions or an increased premium. For higher sums insured, additional medical verification including blood tests and reports from doctors is usually required.
This insurance is mainly purchased by self-employed professionals, it is also called 'one person company'. This insurance would cover maximum 80% of the income after the accident. In Dutch, the total permanent disability insurance is called Arbeidsongeschiktheidsverzekering.
TPD differs from income protection insurance in that:
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