When a court imposes a prison sentence, it generally does not fix a single number of years; instead, under the Indeterminate Sentence Law (ISL), it imposes an indeterminate sentence with a minimum and a maximum term. The convict must serve the minimum before becoming eligible for release on parole, and may be held up to the maximum. The purpose of the ISL is to individualize the administration of criminal justice and to give the convict an incentive for reform, since release on parole depends on good behavior. How the terms are set differs by the law violated: for offenses under the Revised Penal Code, the maximum is the penalty properly imposable considering the attending circumstances, and the minimum is within the range of the penalty next lower in degree; for offenses under special laws, the minimum and maximum are within the range provided by that special law. The ISL does not apply in certain cases, such as: persons convicted of offenses punished with death or life imprisonment (or reclusion perpetua); those convicted of treason, piracy, or certain other grave offenses; habitual delinquents; escapees; and those whose maximum term of imprisonment does not exceed one year. Understanding the ISL matters because it determines the actual length and parole eligibility of a sentence.
An Indeterminate Sentence
Under the Indeterminate Sentence Law, a prison sentence has a minimum and a maximum term. The convict must serve the minimum to be eligible for parole, and may be held up to the maximum.
How the Terms Are Set
- Revised Penal Code offenses — maximum is the penalty properly imposable; minimum is within the next lower degree; and
- Special laws — both within the range the special law provides.
When It Does Not Apply
The ISL does not apply to: those punished by death or life imprisonment/reclusion perpetua; treason, piracy, and certain grave offenses; habitual delinquents; escapees; and sentences not exceeding one year.
Practical Takeaways
- Most sentences are indeterminate (minimum + maximum);
- The minimum governs parole eligibility;
- The ISL has several exceptions (life imprisonment, habitual delinquents, short sentences).
Frequently Asked Questions
What is an indeterminate sentence? A prison sentence with a minimum and a maximum term, rather than a single fixed period. The convict must serve the minimum before becoming eligible for parole and may be held up to the maximum.
What is the purpose of the Indeterminate Sentence Law? To individualize criminal justice and give the convict an incentive to reform, since release on parole after the minimum depends on good behavior.
How are the minimum and maximum set? For Revised Penal Code offenses, the maximum is the penalty properly imposable and the minimum is within the next lower degree. For special-law offenses, both are within the range the special law provides.
When does the Indeterminate Sentence Law not apply? Among others, to those punished by death or life imprisonment or reclusion perpetua, to treason and piracy, to habitual delinquents, to escapees, and to sentences not exceeding one year.
This commentary is for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, please consult a licensed attorney.
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