Jail credit disputes are almost always argued as abuse of discretion. I argued one of these in the Appeals Court recently, and asked the panel to consider a different frame: that the case law, read together, actually describes three situations, and that in two of the three the sentencing judge has no discretion at all. No single case states the framework outright. I think it is there in the body of the decisions, and if it is, a great many jail credit appeals are being argued on the wrong standard.
Start with what Massachusetts has always been averse to
Two commitments run through this area of law, and they pull in opposite directions.
The first is an aversion to dead time. Commonwealth v. Milton, 427 Mass. 18, 21 n.4 (1998), defines it as time spent in confinement for which no day-to-day credit is given against any sentence. The aversion is old. In Brown v. Commissioner of Correction, 336 Mass. 718, 721 (1958), the Supreme Judicial Court chose the reading of the sentencing rules under which a prisoner receives credit “not as matter of grace, but as of right,” for time served under an erroneous conviction. Nearly twenty years later Manning v. Superintendent, 372 Mass. 387, 396 (1977), put it as familiar equitable principles weighing heavily against a prisoner having served bad or dead time for which no credit is given.
The second is a refusal to let anyone bank time. A defendant generally cannot apply time already served on an earlier, unrelated conviction toward a new one. Commonwealth v. Holmes, 469 Mass. 1010, 1012 (2014); Manning, 372 Mass. at 395. The worry is obvious once stated: a person with credit in the bank has been handed a discount on a crime not yet committed.
The SJC treats these as competing considerations to be weighed, and says so in those words: “In weighing these equitable considerations, the banking prohibition outweighs any concern about dead time.” Holmes, 469 Mass. at 1011; see Caliz, 486 Mass. at 891 (“we have weighed the competing concerns”). What follows is an argument that the weighing has come out the same way often enough, and for structural enough reasons, that in most cases it functions as a boundary rather than a balance — and that where it does, the appellate question is not how the discretion was used but whether there was any to use. That is my reading, not the Court’s framing.
The first category: credit is mandatory
Where a defendant has served time that can be applied against a related sentence, and no banking or windfall problem is present, credit is not a favor. It is owed.
For pretrial custody the source is statutory. G.L. c. 279, § 33A and G.L. c. 127, § 129B direct that days spent incarcerated before trial be credited toward the sentence eventually received. Neither statute contains a weighing step, and § 129B carries an express proviso for time already deducted. Post-conviction, where no statute controls, the SJC has looked to considerations of fairness to decide whether credit is owed. Holmes, 469 Mass. at 1011.
One important qualification. Where a defendant is held simultaneously on charges in more than one case, the allocation of that custody is not mechanical. In Commonwealth v. Ridge, No. SJC-11676 (Mass. Mar. 2, 2015), the SJC said that “[f]airness is the basic touchstone” in determining whether and to what extent credit shall be given, and that the sentencing judge “plainly would have had the power to accede to or to deny” the request. So the mandatory category is at its strongest for pretrial custody on the case being sentenced that has not already been credited elsewhere; once two cases overlap, allocation is decided on fairness and the judge has room to move. That is an equitable inquiry, but arriving at the answer equitably does not make the answer optional.
Whether two sentences are related is a real question and it is often the fight. But it is a question about the chronology and the legal relationship between the sentences. It is not a question about what the judge would prefer.
The third category: credit is mandatorily denied
Take the opposite end. Where granting credit would let a defendant bank time toward an unrelated offense, or would produce a windfall, the SJC has so far always said no — but it has been careful not to say never.
Commonwealth v. Caliz, 486 Mass. 888 (2021), is the clearest modern illustration. The defendant sought credit for time served on a prior, wholly unrelated drug conviction that had been vacated in the wake of a State laboratory scandal. The SJC said no, weighing dead time against banked time and concluding he was not entitled to mandatory credit for time served on an unrelated charge. The misconduct was egregious and it did not change the answer — though the Court’s stated reason was that the misconduct had already been remedied by dismissal with prejudice, and that remedies for prosecutorial misconduct should be tailored to the harm.
The door is not closed. Holmes said there “may be circumstances in which a criminal defendant could receive credit for time previously served on an unrelated crime, but we do not find those circumstances here,” and its footnote 3 reserved the case of a conviction vacated on the ground of actual innocence. 469 Mass. at 1012 & n.3. Caliz repeated the reservation: the Court “left open… the possibility of allowing credit… where there is actual innocence or some other equally compelling circumstance,” and noted it had not yet found one. 486 Mass. at 891. Justice Cypher, concurring, would have gone further and “close[d] the escape hatches left open in Holmes completely” — but that is a concurrence, not the holding. So this category is better described as a rule that has never yet yielded than as one that cannot.
The windfall concern is the same instinct viewed from another angle. If a defendant can look at an old conviction, work to get it vacated, and thereby wipe out time on the case he is currently facing, the incentive that creates is the problem the rule exists to prevent.
What is left in the middle is the only real discretion
Set those two categories at either end and something becomes visible. The genuinely discretionary space is what remains between them. A judge has room to act where credit is not compelled by the relationship between the sentences and not forbidden by the banking and windfall prohibitions.
That is a meaningfully smaller territory than the way these cases usually get argued. And it reframes the appellate question. Before asking whether a judge abused his discretion, ask whether he had any. If the case sits in the first or third category, discretion is simply the wrong vocabulary, and an appellate court reviewing the denial is reviewing a legal determination about which category applies.
That matters because of what follows from it. A judge who denies credit on the footing that the time was already applied somewhere, or that the sentences are unrelated, has made a legal determination. Dressing that up as an exercise of discretion imports deference the decision never earned.
There is a strategic consequence worth stating plainly. Asking an appellate court to exercise its discretion in a defendant's favor is asking for a favor. Showing that the law compels the result is asking for a judgment. Where the facts genuinely sit in the first category, treating the case as a discretionary one gives away the stronger of those two positions, and a panel will usually notice which one it is being offered.
The fallback if you are in the middle
None of this helps if the case really does sit in the discretionary category. There the question returns to how the discretion was used, and one principle is worth having at hand. In Commonwealth v. Fredette, 56 Mass. App. Ct. 253, 259 n.10 (2002), the Appeals Court noted, citing Commonwealth v. Manning, 47 Mass. App. Ct. 923 (1999), that failure to exercise discretion is itself an abuse of discretion. It is a footnote rather than the operative holding — Fredette itself turned on unpreserved-error review — but the principle is well settled. The context there was extraneous material reaching a jury rather than jail credit, but the principle travels. A judge who treats a discretionary question as foreclosed has not exercised discretion at all.
So the argument has two layers. The case is not discretionary. If the court concludes otherwise, the discretion was never exercised.
Where these cases are actually decided
The category question comes first, and it is usually the whole case. What the record needs to show, how much deference the original decision receives, how much room the judge had in the first place: all of it follows from which of the three situations the facts occupy.
In the first category the fight is about relatedness. Whether two sentences are related turns on the chronology and on the legal connection between them, so the details that matter are the unglamorous ones. When the custody began. What the person was being held on at each stage. How the sentences line up against one another in time.
The banking and windfall question arrives whether or not anyone invites it. It is the third category, it is fatal where it applies, and a court will reach for it on its own. Much of what separates a credit claim that works from one that does not is being able to explain why a particular set of facts hands nobody a discount on a crime not yet committed.
And the standard of review is not a technicality that only lawyers care about. It decides how much weight an appellate court gives the original ruling, and in a close case that is the difference between a decision being revisited and a decision being left alone.
I handle criminal appeals in the Massachusetts Appeals Court and the Supreme Judicial Court, including sentencing and jail credit disputes. If you are weighing an appeal from a denial of credit and want a candid view of which category the facts fall into, I offer a confidential initial consultation.
For a consultation, call (617) 313-3482 or contact the office.