; powers. Sec. 503. Pension Rehabilitation Trust Fund. Sec. 504. Loan program for multiemployer defined benefit plans. Sec. 505. Coordination with withdrawal liability and funding rules. Sec. 506. Issuance of Treasury bonds. Sec. 507. Reports of plans receiving pension rehabilitation loans. Sec. 508. PBGC financial assistance. I Health-related tax relief 101. Payroll credit for COVID–19 charity care provided by hospitals (a) In general In the case of an employer which is an eligible hospital, there shall be allowed as a credit against the tax imposed by section 3111(a) of the Internal Revenue Code of 1986 for each calendar quarter an amount equal to 90 percent of the COVID-related charity care furnished by such hospital during such calendar quarter. (b) Limitations and refundability (1) Credit limited to certain employment taxes The credit allowed by subsection (a) with respect to any calendar quarter shall not exceed the tax imposed by section 3111(a) of such Code for such calendar quarter (reduced by any credits allowed under subsection (e) or (f) of section 3111 of such Code, or under section 7001 or 7003 of the Families First Coronavirus Response Act, for such quarter) on the wages paid with respect to the employment of all employees of the employer. (2) Refundability of excess credit (A) In general If the amount of the credit under subsection (a) exceeds the limitation of paragraph (1) for any calendar quarter, such excess shall be treated as an overpayment that shall be refunded under sections 6402(a) and 6413(b) of such Code. (B) Treatment of payments For purposes of section 1324 of title 31, United States Code, any amounts due to an employer under this paragraph shall be treated in the same manner as a refund due from a credit provision referred to in subsection (b)(2) of such section. (c) Eligible hospital For purposes of this section, the term eligible hospital means a subsection (d) hospital as defined in section 1886(d)(1)(B) of the Social Security Act ( 42 U.S.C. 1395ww(d)(1)(B) ) or a critical