Insurance companies are regulated by the states, so contracts or options that may be available in some states may not be available in others. Their federal tax treatment, however, is governed by the Internal Revenue Code.
In Canada the most common type of annuity is the life annuity, which is normally purchased by persons at their retirement age with tax-sheltered funds or with savings funds. The monthly payments from annuities with tax-sheltered funds are fully taxable when withdrawn as neither the capital or return thereon has been taxed in any way. Conversely income from annuities purchased with savings funds is divided between the return of capital and interest earned, with only the latter being taxable.