6. Agencies are authorized to pay a Withholding Tax Allowance (WTA) and Relocation
Income Tax Allowance (RITA) to eligible employees. What are the relevant special
terms and examples for calculating WTA and RITA payments?
FTR, Chapter 302, Part 302-17 establishes the process for calculating WTA and RITA
payments. This FTR bulletin includes examples for the following relevant terms:
Marginal Tax Rate (MTR) pursuant to FTR § 302-17.1, Combined Marginal Tax Rate
(CMTR) pursuant to FTR § 302-17.40, Withholding Tax Allowance (WTA) pursuant to
FTR §302-17.24, and Relocation claims paid with or without the WTA, pursuant to §
302-17.61.
a. Marginal Tax Rate (MTR). The MTR is the rate applied to the last increment of
taxable income after taxable relocation benefits have been added to the employee’s
income. For example, suppose a married employee who files jointly has a taxable
income of $120,000. According to the IRS 2019 Tax Rate Schedules, taxable income
between $78,950 and $168,400 is taxed at the 22 percent tax rate. Therefore, since
their $120,000 of taxable income falls within that range, it is taxed at the 22 percent
MTR. If the employee receives $60,000 of taxable relocation benefits, then the taxable
income for the employee and spouse increases to $180,000, which is in the next
highest tax bracket. In this example, the employee and spouse now have a Federal
MTR (FMTR) of 24 percent after the taxable relocation benefits have been added to
their income.
b. Combined Marginal Tax Rate (CMTR). The CMTR is the rate determined by
combining the applicable FMTR, state MTR (SMTR) and local income taxes (LMTR)
using the procedures provided in FTR §302-17.40.
Formula: CMTR = FMTR + (1-FMTR)(SMTR) + (1-FMTR)(LMTR)
Given an FMTR of 22%, SMTR of 6%, and LMTR of 6%, the CMTR would be
calculated as follows:
CMTR = 0.22 + (1.00 – 0.22) (0.06) + (1.00-0.22) (0.03) = .2902 or 29.02%.
c. Withholding Tax Allowance (WTA). The agency computes the WTA by applying a
grossed-up withholding each time the employee incurs a covered, taxable relocation
expense, regardless of whether it is a reimbursement, allowance, or direct or indirect
payment to a vendor. The formula to calculate the WTA is as follows:
Formula: WTA = R/(1 - R) x Expense
where R is the withholding rate for supplemental wages
Given a supplemental wage rate of 22 percent, and the following authorized
expenses, agencies would “gross-up” the relocation entitlement(s) to offset the
additional federal tax liability, WTA would be calculated as follows:
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