Fiduciaries may annually, without court allowance, take sums as follows on account of corpus commissions: if there is but one fiduciary, the amount so taken may equal one-fifth of 1% of the value of the corpus and, if there are two or more fiduciaries, the amount so taken may equal the commissions which may be taken pursuant to this section when there is but one fiduciary, plus one-fifth of the commissions for each fiduciary more than one.
N.J.S. § 3B:18-17