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.
BREAKING DOWN 'Material Participation Test'. There are seven tests the IRS uses to determine whether participation in a business activity is material or not. Two of the criteria that they use are the amount of time spent participating in the business activity and how much control the taxpayer has over the activity. 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.