Short answer. Yes. Article 96 of the Revised Penal Code states that commutation of the original sentence for another of a different length and nature has the legal effect of substituting the latter in the place of the former. The commuted sentence is not an addition — it replaces the original entirely.
What the law says
The commutation of the original sentence for another of a different length and nature shall have the legal effect of substituting the latter in the place of the former.
Revised Penal Code, Article 96 — Effect Of Commutation. Read the full provision →
What commutation of sentence means
Commutation is the reduction or modification of a sentence by executive authority — in the Philippines, this is an act of clemency exercised by the President through the Board of Pardons and Parole. Unlike a full pardon, which absolves the offense entirely, commutation does not erase the conviction. It changes only the penalty: the original sentence is exchanged for a different one, typically lighter or shorter. A death sentence might be commuted to reclusion perpetua; a long prison term might be reduced in years.
The substitution effect
Article 96 is precise about what happens legally once a commutation takes effect: the new sentence substitutes the original one. The original sentence disappears from the legal picture. The prisoner is no longer serving the original penalty — they are serving the commuted penalty. This substitution is total and immediate upon the commutation taking effect. The prisoner's legal situation is now defined by the new sentence, not the old one. Ancillary consequences that flow from the type and length of penalty — such as eligibility for parole, computation of good conduct time allowances, or the point at which civil rights are restored — are determined by the commuted sentence.
Commutation compared to parole and pardon
These three forms of executive clemency are distinct. Pardon forgives the offense and restores full civil rights (absolute pardon) or conditions the restoration (conditional pardon). Parole releases the prisoner before the sentence is fully served but keeps them under supervision; the sentence remains in force. Commutation changes the sentence itself — it is a modification of the penalty, not a forgiveness of the crime and not a supervised release. After commutation, the prisoner continues to serve, but serves the new, modified sentence. The conviction itself is unaffected.
Practical consequences of the substitution rule
The substitution rule under Article 96 has real practical effects. If an offender was convicted and sentenced to a penalty that carries certain disqualifications — for example, a penalty that prevents them from holding public office or exercising the right to vote — and the commuted sentence is a shorter or different penalty, the disqualifications may be recalculated based on the new penalty. Similarly, the point at which the sentence is deemed fully served is computed from the commuted term. Anyone whose family member has received a commuted sentence should verify the practical implications with the appropriate authorities or with legal counsel, since the downstream effects depend on what the new sentence specifically provides.