/**
 * @import {Timestamp} from '@agoric/time'
 * @import {RelativeTime} from '@agoric/time'
 * @import {AdminFacet, InvitationAmount, ZCFMint} from '@agoric/zoe';
 */
export const SECONDS_PER_YEAR: bigint;
export function makeInterestCalculator(annualRate: Ratio, chargingPeriod: RelativeTime, recordingPeriod: RelativeTime): CalculatorKit;
export function calculateCompoundedInterest(priorCompoundedInterest: Ratio, priorDebt: NatValue, newDebt: NatValue): import("@agoric/ertp/src/ratio.js").Ratio;
export function chargeInterest(powers: {
    mint: ZCFMint<"nat">;
    mintAndTransferWithFee: MintAndTransfer;
    poolIncrementSeat: ZCFSeat;
    seatAllocationKeyword: Keyword;
}, params: {
    interestRate: Ratio;
    chargingPeriod: RelativeTime;
    recordingPeriod: RelativeTime;
}, prior: {
    latestInterestUpdate: Timestamp;
    compoundedInterest: Ratio;
    totalDebt: Amount<"nat">;
}, accruedUntil: Timestamp): {
    compoundedInterest: Ratio;
    latestInterestUpdate: Timestamp;
    totalDebt: Amount<"nat">;
};
import type { RelativeTime } from '@agoric/time';
import type { ZCFMint } from '@agoric/zoe';
import type { Timestamp } from '@agoric/time';
//# sourceMappingURL=interest.d.ts.map