TimeTrex/classes/payroll_deduction/US/MI.class.php

<?php
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 * TimeTrex Software Inc. Copyright (C) 2003 - 2021 TimeTrex Software Inc.
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/**
 * @package PayrollDeduction\US
 */
class PayrollDeduction_US_MI extends PayrollDeduction_US {

	var $state_options = [
			20220101 => [
					'rate'      => 4.25,
					'allowance' => 5000,
			],
			20210101 => [
					'rate'      => 4.25,
					'allowance' => 4900,
			],
			20200101 => [
					'rate'      => 4.25,
					'allowance' => 4750,
			],
			20190101 => [
					'rate'      => 4.25,
					'allowance' => 4400,
			],
			20180101 => [
					'rate'      => 4.25,
					'allowance' => 4050,
			],
			20140101 => [
					'rate'      => 4.25,
					'allowance' => 4000,
			],
			20130101 => [
					'rate'      => 4.25,
					'allowance' => 3950,
			],
			20110101 => [
					'rate'      => 4.35,
					'allowance' => 3700,
			],
			20090101 => [
					'rate'      => 4.35,
					'allowance' => 3600,
			],
			20071001 => [ //01-Oct-07
						  'rate'      => 4.35,
						  'allowance' => 3400,
			],
			20070101 => [
					'rate'      => 3.9,
					'allowance' => 3400,
			],
			20060101 => [
					'rate'      => 3.9,
					'allowance' => 3300,
			],
	];

	var $state_ui_options = [
			20060101 => [ 'wage_base' => 9500, 'new_employer_rate' => 2.7 ],
	];

	function getStateAnnualTaxableIncome() {
		$annual_income = $this->getAnnualTaxableIncome();

		$allowance = $this->getStateAllowanceAmount();

		$income = bcsub( $annual_income, $allowance );

		Debug::text( 'State Annual Taxable Income: ' . $income, __FILE__, __LINE__, __METHOD__, 10 );

		return $income;
	}


	function getStateAllowanceAmount() {
		$retarr = $this->getDataFromRateArray( $this->getDate(), $this->state_options );
		if ( $retarr == false ) {
			return false;
		}

		$allowance = $retarr['allowance'];

		$retval = bcmul( $this->getStateAllowance(), $allowance );

		Debug::text( 'State Allowance Amount: ' . $retval, __FILE__, __LINE__, __METHOD__, 10 );

		return $retval;
	}

	function _getStateTaxPayable() {
		$annual_income = $this->getStateAnnualTaxableIncome();

		$retval = 0;

		if ( $annual_income > 0 ) {
			$retarr = $this->getDataFromRateArray( $this->getDate(), $this->state_options );
			if ( $retarr == false ) {
				return false;
			}

			$rate = bcdiv( $retarr['rate'], 100 );
			$retval = bcmul( $annual_income, $rate );
		}

		if ( $retval < 0 ) {
			$retval = 0;
		}

		Debug::text( 'State Annual Tax Payable: ' . $retval, __FILE__, __LINE__, __METHOD__, 10 );

		return $retval;
	}
}

?>