delivered the opinion of the court:
In McChesney v. City of Chicago, 213 Ill. 592, we held that section 42 of the Local Improvement act, as amended in 1903, does not authorize the city council to provide for •the collection of interest upon special assessments not divided into installments, and that in the absence of statutory authority the city council has no right to require the payment of interest upon such assessments, as interest is never allowed unless given by statute. Appellant relies upon this decision in support of its contention that the promise sued on is void, and that the money collected as interest, and now in its possession, belongs to the property owners from whom it was collected.
It is to be noted that the McChesney case was an appeal by a property owner from a judgment of confirmation, and the property owner was objecting to the confirmation of the interest-bearing assessment. In the case at bar, however, the interest-bearing assessments have been confirmed, the property owners have voluntarily paid the interest and such interest is now in the possession of the city, and the city is urging the illegality of the provision requiring the payment of interest on assessments not divided into installments.
As to appellant’s first contention,—that the promise sued on is illegal and void,—the promise is only to pay or turn over to the contractor such interest as shall be collected from the property owners. Appellant is merely liable on this promise for money had and received by it for appellee’s use. Manifestly a promise by a city to turn over to an individual money which may be received by the city for such individual’s use is not an illegal promise, and may be enforced unless the city is under a legal obligation to return the money to the person or persons from whom it was received. The controlling question in this case is, therefore, whether the city is under a legal obligation to return the money collected as interest upon' these assessments to those by whom it was paid.
It has been frequently held by this court that money voluntarily paid to another under a mistake of law, but with knowledge of all the facts, cannot be recovered back. Elston v. City of Chicago, 40 Ill. 514; Union Building Ass. v. City of Chicago, 61 id. 439; Swanston v. Ijams, 63 id. 165; Walser v. Board of Education, 160 id. 272; Otis v. People, 196 id. 542; Yates v. Royal Ins. Co. 200 id. 202.
In Elston v. City of Chicago, supra, it was said: “No case can be found, where money has "been voluntarily paid with a full knowledge of the facts and circumstances under which it was demanded, which holds that it can be recovered back upon the ground that the payment was made under a misapprehension of the legal rights and obligations of the party paying.”
In the case at bar there is no pretense that the property owners were ignorant of any of the facts. They were fully informed that, the assessments bore interest, and they voluntarily paid such interest, not under a mistake of fact, but under a misapprehension of their legal rights in the matter. The city is therefore under no obligation, in law, to return the money collected as interest to those from whom it was received.
A case almost identical with this one is City of Chicago v. Stuart, 53 Ill. 83. There a public improvement had been constructed under a contract with the city of Chicago, which contract, after setting forth the amounts to he paid for the work, provided that the money should be payable out of the special assessment when collected, and not otherwise, and the city agreed, in addition thereto, to pay to the contractor “such additional sums of money as said city may collect as damages on the assessment levied.” The collection of five per cent damages by the collector holding the warrant was authorized by section 11 of the city charter on all taxes and special assessments not paid on or before a certain date, arid these were the damages referred to in the contract. The contractor brought suit in assumpsit against the city to recover the money claimed to be due under the contract. The trial court, by evidence admitted and instructions given, permitted the jury to include in their verdict the amount of damages collected on the warrant by the collector. The city contended that, inasmuch as this court had in Scammon v. City of Chicago, 44 Ill. 269, decided that the city collector had no power to enforce the collection of the damages, as provided in section 11 of the charter, before judgment and on a mere warrant, the city might be liable in an action to restore these moneys to the parties from whom they were collected. It was held by this court, however, that as the damages were paid over by the property owners voluntarily no action could be maintained by them to recover it back, and in finally disposing of the case it was said: “The parties assessed have not complained, and do not complain, of the collection of these damages by the city. The city has them in its treasury, and by the contract they belong to the appellees. It is their money, fairly earned. The city cannot profit by its own wrong. We see nothing in this case to justify the city authorities in withholding this money from the appellees.”
In our judgment the Stuart case is conclusive upon the question as to the correctness of the judgment of the circuit court in the case at bar, and is in harmony with the other cases hereinbefore cited.
The sections of the Local Imprbvement act which provide for returning to the property owners the excess where a larger sum has been collected than is needed for the construction of the improvement have no application in this case. It is not contended that the judgment is for any larger amount than would be produced by computing interest on the contractor’s 'vouchers at the rate of five per cent per annum, in accordance with the ordinances. The money was paid by the property owners for the express purpose of paying such interest, hence the money in the possession of the city for which this judgment was rendered is not “excess,” within the meaning of the statute.
The contractor submitted his bid upon the understanding that the vouchers to be issued for work and materials should bear interest at five per cent per annum. It is apparent that the contractor could make his bid less' if he was to receive interest on the money advanced by him in constructing the improvement than if he was to receive no interest for the use of his money so expended, and that the logical difference in such bids would be the amount of the interest in question. It would therefore seem that the property owners have not paid any greater sum than they would have been required to pay had the ordinances provided for non-interest bearing assessments.
The judgment of the Branch Appellate Court will be affii med.
Judgment affirmed.