1 A pacemaker is a small device that's placed in the chest or abdomen to help control abnormal heart rhythms. 2  This device uses low-energy electrical pulses to prompt the heart to beat at a normal rate. 3  Pacemakers are used to treat arrhythmias.
DEFINITION of 'Material Participation Test'. A set of criteria that determines whether a taxpayer is a material participant in a business venture.The material participation test will determine whether business income received by the taxpayer is active or passive.According to the IRS, if the taxpayer participates in a business activity on a regular, continuous and substantial basis, then the taxpayer materially participates in the business.Next Up.EFINITION of 'Material Participation Test'. A set of criteria that determines whether a taxpayer is a material participant in a business venture.
The IRS defines participation as being any work that an owner of a business would typically do. If the work is not typically done by an owner, and if the reason for doing the work was to avoid the passive loss rules, then the activity will not be deemed to be material participation.efinition of Participation. Although Â§469 defines material participation as participation on a regular, continuous, and substantial basis, the IRS has decided that those terms are not concrete enough to provide a bright-line distinction between active and passive activities.