Mr. Justice Stewart
delivered the opinion of the Court.
When at the behest of the defendant a criminal conviction has been set aside and a new trial ordered, to what extent does the Constitution limit the imposition of a harsher sentence after conviction upon retrial? That is the question presented by these two cases.
In No. 413 the respondent Pearce was convicted in a North Carolina court upon a charge of assault with intent to commit rape. The trial judge sentenced him to prison for a term of 12 to 15 years. Several years later he initiated a state post-conviction proceeding which culminated in the reversal of his conviction by the Supreme Court of North Carolina, upon the ground that an involuntary confession had unconstitutionally been admitted in evidence against him, 266 N. C. 234, 145 S. E. 2d 918. He was retried, convicted, and sentenced by the trial judge to an eight-year prison term, which, when added to the time Pearce had already spent in prison, the parties agree amounted to a longer total sentence than that originally imposed.1 The conviction and sentence were affirmed on appeal. 268 N. C. 707, 151 S. E. 2d 571. Pearce then began this habeas corpus proceeding in the United States District Court for the Eastern Dis[?]*?trict of North Carolina. That court held, upon the authority of a then very recent Fourth Circuit decision, Patton v. North Carolina, 381 F. 2d 636, cert. denied, 390 U. S. 905, that the longer sentence imposed upon retrial was “unconstitutional and void.”2 Upon the failure of the state court to resentence Pearce within 60 days, the federal court ordered his release. This order was affirmed by the United States Court of Appeals for the Fourth Circuit, 397 F. 2d 253, in a brief per curiam judgment citing its Patton decision, and we granted certiorari. 393 U. S. 922.
In No. 418 the respondent Rice pleaded guilty in an Alabama trial court to four separate charges of second-degree burglary. He was sentenced to prison terms aggregating 10 years.3 Two and one-half years later the judgments were set aside in a state coram nobis proceeding, upon the ground that Rice had not been accorded his constitutional right to counsel. See Gideon v. Wainwright, 372 U. S. 335. He was retried upon three of the charges, convicted, and sentenced to prison terms aggregating 25 years.4 No credit was given for the time he had spent in prison on the original judgments. He then brought this habeas corpus proceeding in the United States District Court for the Middle District of [715]*715Alabama, alleging that the state trial court had acted unconstitutionally in failing to give him credit for the time he had already served in prison, and in imposing grossly harsher sentences upon retrial. United States District Judge Frank M. Johnson, Jr., agreed with both contentions. While stating that he did “not believe that it is constitutionally impermissible to impose a harsher sentence upon retrial if there is recorded in the court record some legal justification for it,” Judge Johnson found that Rice had been denied due process of law, because “[ujnder the evidence in this case, the conclusion is inescapable that the State of Alabama is punishing petitioner Rice for his having exercised his post-conviction right of review and for having the original sentences declared unconstitutional.” 274 F. Supp. 116, 121, 122. The judgment of the District Court was affirmed by the United States Court of Appeals for the Fifth Circuit, “on the basis of Judge Johnson’s opinion,” 396 F. 2d 499, 500, and we granted certiorari. 393 U. S. 932.
The problem before us5 involves two related but analytically separate issues. One concerns the constitutional [716]*716limitations upon the imposition of a more severe punishment after conviction for the same offense upon retrial. The other is the more limited question whether, in computing the new sentence, the Constitution requires that credit must be given for that part of the original sentence already served. The second question is not presented in Pearce, for in North Carolina it appears to be the law that a defendant must be given full credit for all time served under the previous sentence. State v. Stafford, 274 N. C. 519, 164 S. E. 2d 371; State v. Paige, 272 N. C. 417, 158 S. E. 2d 522; State v. Weaver, 264 N. C. 681, 142 S. E. 2d 633. In any event, Pearce was given such credit.6 Alabama law, however, seems to reflect a different view. Aaron v. State, 43 Ala. App. 450, 192 So. 2d 456; Ex parte Merkes, 43 Ala. App. 640, 198 So. 2d 789.7 And respondent Rice, upon being re-sentenced, was given no credit at all for the two and one-half years he had already spent in prison.
We turn first to the more limited aspect of the question before us — whether the Constitution requires that, in computing the sentence imposed after conviction upon [717]*717retrial, credit must be given for time served under the original sentence. We then consider the broader question of what constitutional limitations there may be upon the imposition of a more severe sentence after reconviction.
I.
The Court has held today, in Benton v. Maryland, post, p. 784, that the Fifth Amendment guarantee against double jeopardy is enforceable against the States through the Fourteenth Amendment. That guarantee has been said to consist of three separate constitutional protections.8 It protects against a second prosecution for the same offense after acquittal.9 It protects against a second prosecution for the same offense after conviction.10 And it protects against multiple punishments for the same offense.11 This last protection is what is necessarily implicated in any consideration of the question whether, in the imposition of sentence for the same offense after retrial, the Constitution requires that credit must be given for punishment already endured. The Court stated the controlling constitutional principle almost 100 years ago, in the landmark case of Ex parte Lange, 18 Wall. 163, 168:
“If there is anything settled in the jurisprudence of England and America, it is that no man can be twice lawfully punished for the same offence. And . . . there has never been any doubt of [this rule’s] entire and complete protection of the party [718]*718when a second punishment is proposed in the same court, on the same facts, for the same statutory-offence.
. . [T]he Constitution was designed as much to prevent the criminal from being twice punished for the same offence as from being twice tried for it.” Id., at 173.
We think it is clear that this basic constitutional guarantee is violated when punishment already exacted for an offense is not fully “credited” in imposing sentence upon a new conviction for the same offense. The constitutional violation is flagrantly apparent in a case involving the imposition of a maximum sentence after reconviction. Suppose, for example, in a jurisdiction where the maximum allowable sentence for larceny is 10 years’ imprisonment, a man succeeds in getting his larceny conviction set aside after serving three years in prison.
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Mr. Justice Stewart
delivered the opinion of the Court.
When at the behest of the defendant a criminal conviction has been set aside and a new trial ordered, to what extent does the Constitution limit the imposition of a harsher sentence after conviction upon retrial? That is the question presented by these two cases.
In No. 413 the respondent Pearce was convicted in a North Carolina court upon a charge of assault with intent to commit rape. The trial judge sentenced him to prison for a term of 12 to 15 years. Several years later he initiated a state post-conviction proceeding which culminated in the reversal of his conviction by the Supreme Court of North Carolina, upon the ground that an involuntary confession had unconstitutionally been admitted in evidence against him, 266 N. C. 234, 145 S. E. 2d 918. He was retried, convicted, and sentenced by the trial judge to an eight-year prison term, which, when added to the time Pearce had already spent in prison, the parties agree amounted to a longer total sentence than that originally imposed.1 The conviction and sentence were affirmed on appeal. 268 N. C. 707, 151 S. E. 2d 571. Pearce then began this habeas corpus proceeding in the United States District Court for the Eastern Dis[?]*?trict of North Carolina. That court held, upon the authority of a then very recent Fourth Circuit decision, Patton v. North Carolina, 381 F. 2d 636, cert. denied, 390 U. S. 905, that the longer sentence imposed upon retrial was “unconstitutional and void.”2 Upon the failure of the state court to resentence Pearce within 60 days, the federal court ordered his release. This order was affirmed by the United States Court of Appeals for the Fourth Circuit, 397 F. 2d 253, in a brief per curiam judgment citing its Patton decision, and we granted certiorari. 393 U. S. 922.
In No. 418 the respondent Rice pleaded guilty in an Alabama trial court to four separate charges of second-degree burglary. He was sentenced to prison terms aggregating 10 years.3 Two and one-half years later the judgments were set aside in a state coram nobis proceeding, upon the ground that Rice had not been accorded his constitutional right to counsel. See Gideon v. Wainwright, 372 U. S. 335. He was retried upon three of the charges, convicted, and sentenced to prison terms aggregating 25 years.4 No credit was given for the time he had spent in prison on the original judgments. He then brought this habeas corpus proceeding in the United States District Court for the Middle District of [715]*715Alabama, alleging that the state trial court had acted unconstitutionally in failing to give him credit for the time he had already served in prison, and in imposing grossly harsher sentences upon retrial. United States District Judge Frank M. Johnson, Jr., agreed with both contentions. While stating that he did “not believe that it is constitutionally impermissible to impose a harsher sentence upon retrial if there is recorded in the court record some legal justification for it,” Judge Johnson found that Rice had been denied due process of law, because “[ujnder the evidence in this case, the conclusion is inescapable that the State of Alabama is punishing petitioner Rice for his having exercised his post-conviction right of review and for having the original sentences declared unconstitutional.” 274 F. Supp. 116, 121, 122. The judgment of the District Court was affirmed by the United States Court of Appeals for the Fifth Circuit, “on the basis of Judge Johnson’s opinion,” 396 F. 2d 499, 500, and we granted certiorari. 393 U. S. 932.
The problem before us5 involves two related but analytically separate issues. One concerns the constitutional [716]*716limitations upon the imposition of a more severe punishment after conviction for the same offense upon retrial. The other is the more limited question whether, in computing the new sentence, the Constitution requires that credit must be given for that part of the original sentence already served. The second question is not presented in Pearce, for in North Carolina it appears to be the law that a defendant must be given full credit for all time served under the previous sentence. State v. Stafford, 274 N. C. 519, 164 S. E. 2d 371; State v. Paige, 272 N. C. 417, 158 S. E. 2d 522; State v. Weaver, 264 N. C. 681, 142 S. E. 2d 633. In any event, Pearce was given such credit.6 Alabama law, however, seems to reflect a different view. Aaron v. State, 43 Ala. App. 450, 192 So. 2d 456; Ex parte Merkes, 43 Ala. App. 640, 198 So. 2d 789.7 And respondent Rice, upon being re-sentenced, was given no credit at all for the two and one-half years he had already spent in prison.
We turn first to the more limited aspect of the question before us — whether the Constitution requires that, in computing the sentence imposed after conviction upon [717]*717retrial, credit must be given for time served under the original sentence. We then consider the broader question of what constitutional limitations there may be upon the imposition of a more severe sentence after reconviction.
I.
The Court has held today, in Benton v. Maryland, post, p. 784, that the Fifth Amendment guarantee against double jeopardy is enforceable against the States through the Fourteenth Amendment. That guarantee has been said to consist of three separate constitutional protections.8 It protects against a second prosecution for the same offense after acquittal.9 It protects against a second prosecution for the same offense after conviction.10 And it protects against multiple punishments for the same offense.11 This last protection is what is necessarily implicated in any consideration of the question whether, in the imposition of sentence for the same offense after retrial, the Constitution requires that credit must be given for punishment already endured. The Court stated the controlling constitutional principle almost 100 years ago, in the landmark case of Ex parte Lange, 18 Wall. 163, 168:
“If there is anything settled in the jurisprudence of England and America, it is that no man can be twice lawfully punished for the same offence. And . . . there has never been any doubt of [this rule’s] entire and complete protection of the party [718]*718when a second punishment is proposed in the same court, on the same facts, for the same statutory-offence.
. . [T]he Constitution was designed as much to prevent the criminal from being twice punished for the same offence as from being twice tried for it.” Id., at 173.
We think it is clear that this basic constitutional guarantee is violated when punishment already exacted for an offense is not fully “credited” in imposing sentence upon a new conviction for the same offense. The constitutional violation is flagrantly apparent in a case involving the imposition of a maximum sentence after reconviction. Suppose, for example, in a jurisdiction where the maximum allowable sentence for larceny is 10 years’ imprisonment, a man succeeds in getting his larceny conviction set aside after serving three years in prison. If, upon reconvietion, he is given a 10-year sentence, then, quite clearly, he will have received multiple punishments for the same offense. For he will have been compelled to serve separate prison terms of three years and 10 years, although the maximum single punishment for the offense is 10 years’ imprisonment. Though not so dramatically evident, the same principle obviously holds true whenever punishment already endured is not fully subtracted from any new sentence imposed.12
We hold that the constitutional guarantee against multiple punishments for the same offense absolutely requires that punishment already exacted must be fully [719]*719“credited”13 in imposing sentence upon a new conviction for the same offense. If, upon a new trial, the defendant is acquitted, there is no way the years he spent in prison can be returned to him. But if he is reconvicted, those years can and must be returned — by subtracting them from whatever new sentence is imposed.
II.
To hold that the second sentence must be reduced by the time served under the first is, however, to give but a partial answer to the question before us.14 We turn, therefore, to consideration of the broader problem of what constitutional limitations there may be upon the general power of a judge to impose upon reconviction a longer prison sentence than the defendant originally received.
A.
Long-established constitutional doctrine makes clear that, beyond the requirement already discussed, the guarantee against double jeopardy imposes no restrictions upon the length of a sentence imposed upon recon-viction. At least since 1896, when United States v. Ball, [720]*720163 U. S. 662, was decided, it has been settled that this constitutional guarantee imposes no limitations whatever upon the power to retry a defendant who has succeeded in getting his first conviction set aside.15 “The principle that this provision does not preclude the Government’s retrying a defendant whose conviction is set aside because of an error in the proceedings leading to conviction is a well-established part of our constitutional jurisprudence.” United States v. Tateo, 377 U. S. 463, 465. And at least since 1919, when Stroud v. United States, 251 U. S. 15, was decided, it has been settled that a corollary of the power to retry a defendant is the power, upon the defendant’s reconviction, to impose whatever sentence may be legally authorized, whether or not it is greater than the sentence imposed after the first conviction.16 “That a defendant’s conviction is overturned on collateral rather than direct attack is irrelevant for these purposes, see Robinson v. United States, 144 F. 2d 392, 396, 397, aff’d on another ground, 324 U. S. 282.” United States v. Tateo, supra, at 466.
Although the rationale for this “well-established part of our constitutional jurisprudence” has been variously [721]*721verbalized, it rests ultimately upon the premise that the original conviction has, at the defendant’s behest, been wholly nullified and the slate wiped clean. As to whatever punishment has actually been suffered under the first conviction, that premise is, of course, an unmitigated fiction, as we have recognized in Part I of this opinion.17 But, so far as the conviction itself goes, and that part of the sentence that has not yet been served, it is no more than a simple statement of fact to say that the slate has been wiped clean. The conviction has been set aside, and the unexpired portion of the original sentence will never be served. A new trial may result in an acquittal. But if it does result in a conviction, we cannot say that the constitutional guarantee against double jeopardy of its own weight restricts the imposition of an otherwise lawful single punishment for the offense in question. To hold to the contrary would be to cast doubt upon the whole validity of the basic principle enunciated in United States v. Ball, supra, and upon the unbroken line of decisions that have followed that principle for almost 75 years. We think those decisions are entirely sound, and we decline to depart from the concept they reflect.18
[722]*722B.
The other argument advanced in support of the proposition that the Constitution absolutely forbids the imposition of a more severe sentence upon retrial is grounded upon the Equal Protection Clause of the Fourteenth Amendment. The theory advanced is that, since convicts who do not seek new trials cannot have their sentences increased, it creates an invidious classification to impose that risk only upon those who succeed in getting their original convictions set aside. The argument, while not lacking in ingenuity, cannot withstand close examination. In the first place, we deal here, not with increases in existing sentences, but with the imposition of wholly new sentences after wholly new trials. Putting that conceptual nicety to one side, however, the problem before us simply cannot be rationally dealt with in terms of “classifications.” A man who is retried after his first conviction has been set aside may be acquitted. If convicted, he may receive a shorter sentence, he may receive the same sentence, or he may receive a longer sentence than the one originally imposed. The result may depend upon a particular combination of infinite variables peculiar to each individual trial. It simply cannot be said that a State has invidiously “classified” those who successfully seek new trials, any more than that the State has invidiously “classified” those prisoners whose convictions are not set aside by denying the mem[723]*723bers of that group the opportunity to be acquitted. To fit the problem of this case into an equal protection framework is a task too Procrustean to be rationally accomplished.
C.
We hold, therefore, that neither the double jeopardy provision nor the Equal Protection Clause imposes an absolute bar to a more severe sentence upon recon-viction. A trial judge is not constitutionally precluded, in other words, from imposing a new sentence, whether greater or less than the original sentence, in the light of events subsequent to the first trial that may have thrown new light upon the defendant’s “life, health, habits, conduct, and mental and moral propensities.” Williams v. New York, 337 U. S. 241, 245. Such information may come to the judge’s attention from evidence adduced at the second trial itself, from a new presentence investigation, from the defendant’s prison record, or possibly from other sources. The freedom of a sentencing judge to consider the defendant’s conduct subsequent to the first conviction in imposing a new sentence is no more than consonant with the principle, fully approved in Williams v. New York, supra, that a State may adopt the “prevalent modern philosophy of penology that the punishment should fit the offender and not merely the crime.” Id., at 247.
To say that there exists no absolute constitutional bar to the imposition of a more severe sentence upon retrial is not, however, to end the inquiry. There remains for consideration the impact of the Due Process Clause of the Fourteenth Amendment.
It can hardly be doubted that it would be a flagrant violation of the Fourteenth Amendment for a state trial court to follow an announced practice of imposing a heavier sentence upon every reconvicted defendant for the explicit purpose of punishing the defendant for his [724]*724having succeeded in getting his original conviction set aside. Where, as in each of the cases before us, the original conviction has been set aside because of a constitutional error, the imposition of such a punishment, “penalizing those who choose to exercise” constitutional rights, “would be patently unconstitutional.” United States v. Jackson, 390 U. S. 570, 581. And the very threat inherent in the existence of such a punitive policy would, with respect to those still in prison, serve to “chill the exercise of basic constitutional rights.” Id., at 582. See also Griffin v. California, 380 U. S. 609; cf. Johnson v. Avery, 393 U. S. 483. But even if the first conviction has been set aside for nonconstitutional error, the imposition of a penalty upon the defendant for having successfully pursued a statutory right of appeal or collateral remedy would be no less a violation of due process of law.19 “A new sentence, with enhanced punishment, based upon such a reason, would be a flagrant violation of the rights of the defendant.” Nichols v. United States, 106 F. 672, 679. A court is “without right to . . . put a price on an appeal. A defendant’s exercise of a right of appeal must be free and unfettered. . . . [I]t is unfair to use the great power given to the court to determine sentence to place a defendant in the dilemma of making an unfree choice.” Worcester v. Commissioner, 370 F. 2d 713, 718. See Short v. United States, 120 U. S. App. D. C. 165, 167, 344 F. 2d 550, 552. “This Court has never held that the States are required to establish avenues of appellate review, but it is now fundamental that, once established, these avenues must be kept free of unreasoned distinctions that can only impede open and equal access to the courts. Griffin v. Illinois, 351 U. S. 12; Douglas v. California, 372 U. S. [725]*725353; Lane v. Brown, 372 U. S. 477; Draper v. Washington, 372 U. S. 487.” Rinaldi v. Yeager, 384 U. S. 305, 310-311.
Due process of law, then, requires that vindictiveness against a defendant for having successfully attacked his first conviction must play no part in the sentence he receives after a new trial. And since the fear of such vindictiveness may unconstitutionally deter a defendant's exercise of the right to appeal or collaterally attack his first conviction, due process also requires that a defendant be freed of apprehension of such a retaliatory motivation on the part of the sentencing judge.20
[726]*726In order to assure the absence of such a motivation, we have concluded that whenever a judge imposes a more severe sentence upon a defendant after a new trial, the reasons for his doing so must affirmatively appear. Those reasons must be based upon objective information concerning identifiable conduct on the part of the defendant occurring after the time of the original sentencing proceeding. And the factual data upon which the increased sentence is based must be made part of the record, so that the constitutional legitimacy of the increased sentence may be fully reviewed on appeal.
We dispose of the two cases before us in the light of these conclusions. In No. 418 Judge Johnson noted that “the State of Alabama offers no evidence attempting to justify the increase in Rice’s original sentences . . . .” 274 F. Supp., at 121. He found it “shocking that the State of Alabama has not attempted to explain or justify the increase in Rice’s punishment — in these three cases, over threefold.” Id., at 121-122. And he found that “the conclusion is inescapable that the State of Alabama is punishing petitioner Rice for his having exercised his post-conviction right of review . . . .” Id., at 122. In No. 413 the situation is not so dramatically clear. Nonetheless, the fact remains that neither at the time the increased sentence was imposed upon Pearce, nor at any stage in this habeas corpus proceeding, has the State offered any reason or justification for that sentence beyond the naked power to impose it. We conclude that in each of the cases before us, the judgment should be affirmed.
It is so ordered.