26 USC 51 - Amount of credit

(a) Determination of amount 
For purposes of section 38, the amount of the work opportunity credit determined under this section for the taxable year shall be equal to 40 percent of the qualified first-year wages for such year.
(b) Qualified wages defined 
For purposes of this subpart
(1) In general 
The term qualified wages means the wages paid or incurred by the employer during the taxable year to individuals who are members of a targeted group.
(2) Qualified first-year wages 
The term qualified first-year wages means, with respect to any individual, qualified wages attributable to service rendered during the 1-year period beginning with the day the individual begins work for the employer.
(3) Limitation on wages per year taken into account 
The amount of the qualified first-year wages which may be taken into account with respect to any individual shall not exceed $6,000 per year ($12,000 per year in the case of any individual who is a qualified veteran by reason of subsection (d)(3)(A)(ii)).
(c) Wages defined 
For purposes of this subpart
(1) In general 
Except as otherwise provided in this subsection and subsection (h)(2), the term wages has the meaning given to such term by subsection (b) of section 3306 (determined without regard to any dollar limitation contained in such section).
(2) On-the-job training and work supplementation payments 

(A) Exclusion for employers receiving on-the-job training payments 
The term wages shall not include any amounts paid or incurred by an employer for any period to any individual for whom the employer receives federally funded payments for on-the-job training of such individual for such period.
(B) Reduction for work supplementation payments to employers 
The amount of wages which would (but for this subparagraph) be qualified wages under this section for an employer with respect to an individual for a taxable year shall be reduced by an amount equal to the amount of the payments made to such employer (however utilized by such employer) with respect to such individual for such taxable year under a program established under section 482(e)1 of the Social Security Act.
(3) Payments for services during labor disputes 
If
(A) the principal place of employment of an individual with the employer is at a plant or facility, and
(B) there is a strike or lockout involving employees at such plant or facility,

the term wages shall not include any amount paid or incurred by the employer to such individual for services which are the same as, or substantially similar to, those services performed by employees participating in, or affected by, the strike or lockout during the period of such strike or lockout.

(4) Termination 
The term wages shall not include any amount paid or incurred to an individual who begins work for the employer
(A) after December 31, 1994, and before October 1, 1996, or
(B) after August 31, 2011.
(d) Members of targeted groups 
For purposes of this subpart
(1) In general 
An individual is a member of a targeted group if such individual is
(A) a qualified IVA recipient,
(B) a qualified veteran,
(C) a qualified ex-felon,
(D) a designated community resident,
(E) a vocational rehabilitation referral,
(F) a qualified summer youth employee,
(G) a qualified food stamp recipient,
(H) a qualified SSI recipient, or
(I) a long-term family assistance recipient.
(2) Qualified IV–A recipient 

(A) In general 
The term qualified IVA recipient means any individual who is certified by the designated local agency as being a member of a family receiving assistance under a IVA program for any 9 months during the 18-month period ending on the hiring date.
(B) IV–A program 
For purposes of this paragraph, the term IVA program means any program providing assistance under a State program funded under part A of title IV of the Social Security Act and any successor of such program.
(3) Qualified veteran 

(A) In general 
The term qualified veteran means any veteran who is certified by the designated local agency as
(i) being a member of a family receiving assistance under a food stamp program under the Food Stamp Act of 1977 for at least a 3-month period ending during the 12-month period ending on the hiring date, or
(ii) entitled to compensation for a service-connected disability, and
(I) having a hiring date which is not more that 1 year after having been discharged or released from active duty in the Armed Forces of the United States, or
(II) having aggregate periods of unemployment during the 1-year period ending on the hiring date which equal or exceed 6 months.
(B) Veteran 
For purposes of subparagraph (A), the term veteran means any individual who is certified by the designated local agency as
(i) 
(I) having served on active duty (other than active duty for training) in the Armed Forces of the United States for a period of more than 180 days, or
(II) having been discharged or released from active duty in the Armed Forces of the United States for a service-connected disability, and
(ii) not having any day during the 60-day period ending on the hiring date which was a day of extended active duty in the Armed Forces of the United States.

For purposes of clause (ii), the term extended active duty means a period of more than 90 days during which the individual was on active duty (other than active duty for training).

(C) Other definitions 
For purposes of subparagraph (A), the terms compensation and service-connected have the meanings given such terms under section 101 of title 38, United States Code.
(4) Qualified ex-felon 
The term qualified ex-felon means any individual who is certified by the designated local agency
(A) as having been convicted of a felony under any statute of the United States or any State, and
(B) as having a hiring date which is not more than 1 year after the last date on which such individual was so convicted or was released from prison.
(5) Designated community residents 

(A) In general 
The term designated community resident means any individual who is certified by the designated local agency
(i) as having attained age 18 but not age 40 on the hiring date, and
(ii) as having his principal place of abode within an empowerment zone, enterprise community, renewal community, or rural renewal county.
(B) Individual must continue to reside in zone, community, or county 
In the case of a designated community resident, the term qualified wages shall not include wages paid or incurred for services performed while the individuals principal place of abode is outside an empowerment zone, enterprise community, renewal community, or rural renewal county.
(C) Rural renewal county 
For purposes of this paragraph, the term rural renewal county means any county which
(i) is outside a metropolitan statistical area (defined as such by the Office of Management and Budget), and
(ii) during the 5-year periods 1990 through 1994 and 1995 through 1999 had a net population loss.
(6) Vocational rehabilitation referral 
The term vocational rehabilitation referral means any individual who is certified by the designated local agency as
(A) having a physical or mental disability which, for such individual, constitutes or results in a substantial handicap to employment, and
(B) having been referred to the employer upon completion of (or while receiving) rehabilitative services pursuant to
(i) an individualized written plan for employment under a State plan for vocational rehabilitation services approved under the Rehabilitation Act of 1973,
(ii) a program of vocational rehabilitation carried out under chapter 31 of title 38, United States Code, or
(iii) an individual work plan developed and implemented by an employment network pursuant to subsection (g) of section 1148 of the Social Security Act with respect to which the requirements of such subsection are met.
(7) Qualified summer youth employee 

(A) In general 
The term qualified summer youth employee means any individual
(i) who performs services for the employer between May 1 and September 15,
(ii) who is certified by the designated local agency as having attained age 16 but not 18 on the hiring date (or if later, on May 1 of the calendar year involved),
(iii) who has not been an employee of the employer during any period prior to the 90-day period described in subparagraph (B)(i), and
(iv) who is certified by the designated local agency as having his principal place of abode within an empowerment zone, enterprise community, or renewal community.
(B) Special rules for determining amount of credit 
For purposes of applying this subpart to wages paid or incurred to any qualified summer youth employee
(i) subsection (b)(2) shall be applied by substituting any 90-day period between May 1 and September 15 for the 1-year period beginning with the day the individual begins work for the employer, and
(ii) subsection (b)(3) shall be applied by substituting $3,000 for $6,000.

The preceding sentence shall not apply to an individual who, with respect to the same employer, is certified as a member of another targeted group after such individual has been a qualified summer youth employee.

(C) Youth must continue to reside in zone or community 
Paragraph (5)(B) shall apply for purposes of subparagraph (A)(iv).
(8) Qualified food stamp recipient 

(A) In general 
The term qualified food stamp recipient means any individual who is certified by the designated local agency
(i) as having attained age 18 but not age 40 on the hiring date, and
(ii) as being a member of a family
(I) receiving assistance under a food stamp program under the Food Stamp Act of 1977 for the 6-month period ending on the hiring date, or
(II) receiving such assistance for at least 3 months of the 5-month period ending on the hiring date, in the case of a member of a family who ceases to be eligible for such assistance under section 6(o) of the Food Stamp Act of 1977.
(B) Participation information 
Notwithstanding any other provision of law, the Secretary of the Treasury and the Secretary of Agriculture shall enter into an agreement to provide information to designated local agencies with respect to participation in the food stamp program.
(9) Qualified SSI recipient 
The term qualified SSI recipient means any individual who is certified by the designated local agency as receiving supplemental security income benefits under title XVI of the Social Security Act (including supplemental security income benefits of the type described in section 1616 of such Act or section 212 of Public Law 9366) for any month ending within the 60-day period ending on the hiring date.
(10) Long-term family assistance recipient 
The term long-term family assistance recipient means any individual who is certified by the designated local agency
(A) as being a member of a family receiving assistance under a IVA program (as defined in paragraph (2)(B)) for at least the 18-month period ending on the hiring date,
(B) 
(i) as being a member of a family receiving such assistance for 18 months beginning after August 5, 1997, and
(ii) as having a hiring date which is not more than 2 years after the end of the earliest such 18-month period, or
(C) 
(i) as being a member of a family which ceased to be eligible for such assistance by reason of any limitation imposed by Federal or State law on the maximum period such assistance is payable to a family, and
(ii) as having a hiring date which is not more than 2 years after the date of such cessation.
(11) Hiring date 
The term hiring date means the day the individual is hired by the employer.
(12) Designated local agency 
The term designated local agency means a State employment security agency established in accordance with the Act of June 6, 1933, as amended (29 U.S.C. 49–49n).
(13) Special rules for certifications 

(A) In general 
An individual shall not be treated as a member of a targeted group unless
(i) on or before the day on which such individual begins work for the employer, the employer has received a certification from a designated local agency that such individual is a member of a targeted group, or
(ii) 
(I) on or before the day the individual is offered employment with the employer, a pre-screening notice is completed by the employer with respect to such individual, and
(II) not later than the 28th day after the individual begins work for the employer, the employer submits such notice, signed by the employer and the individual under penalties of perjury, to the designated local agency as part of a written request for such a certification from such agency.

For purposes of this paragraph, the term pre-screening notice means a document (in such form as the Secretary shall prescribe) which contains information provided by the individual on the basis of which the employer believes that the individual is a member of a targeted group.

(B) Incorrect certifications 
If
(i) an individual has been certified by a designated local agency as a member of a targeted group, and
(ii) such certification is incorrect because it was based on false information provided by such individual,

the certification shall be revoked and wages paid by the employer after the date on which notice of revocation is received by the employer shall not be treated as qualified wages.

(C) Explanation of denial of request 
If a designated local agency denies a request for certification of membership in a targeted group, such agency shall provide to the person making such request a written explanation of the reasons for such denial.
(e) Credit for second-year wages for employment of long-term family assistance recipients 

(1) In general 
With respect to the employment of a long-term family assistance recipient
(A) the amount of the work opportunity credit determined under this section for the taxable year shall include 50 percent of the qualified second-year wages for such year, and
(B) in lieu of applying subsection (b)(3), the amount of the qualified first-year wages, and the amount of qualified second-year wages, which may be taken into account with respect to such a recipient shall not exceed $10,000 per year.
(2) Qualified second-year wages 
For purposes of this subsection, the term qualified second-year wages means qualified wages
(A) which are paid to a long-term family assistance recipient, and
(B) which are attributable to service rendered during the 1-year period beginning on the day after the last day of the 1-year period with respect to such recipient determined under subsection (b)(2).
(3) Special rules for agricultural and railway labor 
If such recipient is an employee to whom subparagraph (A) or (B) of subsection (h)(1) applies, rules similar to the rules of such subparagraphs shall apply except that
(A) such subparagraph (A) shall be applied by substituting $10,000 for $6,000, and
(B) such subparagraph (B) shall be applied by substituting $833.33 for $500.
(f) Remuneration must be for trade or business employment 

(1) In general 
For purposes of this subpart, remuneration paid by an employer to an employee during any taxable year shall be taken into account only if more than one-half of the remuneration so paid is for services performed in a trade or business of the employer.
(2) Special rule for certain determination 
Any determination as to whether paragraph (1), or subparagraph (A) or (B) of subsection (h)(1), applies with respect to any employee for any taxable year shall be made without regard to subsections (a) and (b) of section 52.
(g) United States Employment Service to notify employers of availability of credit 
The United States Employment Service, in consultation with the Internal Revenue Service, shall take such steps as may be necessary or appropriate to keep employers apprised of the availability of the work opportunity credit determined under this subpart.
(h) Special rules for agricultural labor and railway labor 
For purposes of this subpart
(1) Unemployment insurance wages 

(A) Agricultural labor 
If the services performed by any employee for an employer during more than one-half of any pay period (within the meaning of section 3306 (d)) taken into account with respect to any year constitute agricultural labor (within the meaning of section 3306 (k)), the term unemployment insurance wages means, with respect to the remuneration paid by the employer to such employee for such year, an amount equal to so much of such remuneration as constitutes wages within the meaning of section 3121 (a), except that the contribution and benefit base for each calendar year shall be deemed to be $6,000.
(B) Railway labor 
If more than one-half of remuneration paid by an employer to an employee during any year is remuneration for service described in section 3306 (c)(9), the term unemployment insurance wages means, with respect to such employee for such year, an amount equal to so much of the remuneration paid to such employee during such year which would be subject to contributions under section 8(a) of the Railroad Unemployment Insurance Act (45 U.S.C. 358 (a)) if the maximum amount subject to such contributions were $500 per month.
(2) Wages 
In any case to which subparagraph (A) or (B) of paragraph (1) applies, the term wages means unemployment insurance wages (determined without regard to any dollar limitation).
(i) Certain individuals ineligible 

(1) Related individuals 
No wages shall be taken into account under subsection (a) with respect to an individual who
(A) bears any of the relationships described in subparagraphs (A) through (G) of section 152 (d)(2) to the taxpayer, or, if the taxpayer is a corporation, to an individual who owns, directly or indirectly, more than 50 percent in value of the outstanding stock of the corporation, or, if the taxpayer is an entity other than a corporation, to any individual who owns, directly or indirectly, more than 50 percent of the capital and profits interests in the entity,[2] (determined with the application of section 267 (c)),
(B) if the taxpayer is an estate or trust, is a grantor, beneficiary, or fiduciary of the estate or trust, or is an individual who bears any of the relationships described in subparagraphs (A) through (G) of section 152 (d)(2) to a grantor, beneficiary, or fiduciary of the estate or trust, or
(C) is a dependent (described in section 152(d)(2)(H)) of the taxpayer, or, if the taxpayer is a corporation, of an individual described in subparagraph (A), or, if the taxpayer is an estate or trust, of a grantor, beneficiary, or fiduciary of the estate or trust.
(2) Nonqualifying rehires 
No wages shall be taken into account under subsection (a) with respect to any individual if, prior to the hiring date of such individual, such individual had been employed by the employer at any time.
(3) Individuals not meeting minimum employment periods 

(A) Reduction of credit for individuals performing fewer than 400 hours of service 
In the case of an individual who has performed at least 120 hours, but less than 400 hours, of service for the employer, subsection (a) shall be applied by substituting 25 percent for 40 percent.
(B) Denial of credit for individuals performing fewer than 120 hours of service 
No wages shall be taken into account under subsection (a) with respect to any individual unless such individual has performed at least 120 hours of service for the employer.
(j) Election to have work opportunity credit not apply 

(1) In general 
A taxpayer may elect to have this section not apply for any taxable year.
(2) Time for making election 
An election under paragraph (1) for any taxable year may be made (or revoked) at any time before the expiration of the 3-year period beginning on the last date prescribed by law for filing the return for such taxable year (determined without regard to extensions).
(3) Manner of making election 
An election under paragraph (1) (or revocation thereof) shall be made in such manner as the Secretary may by regulations prescribe.
(k) Treatment of successor employers; treatment of employees performing services for other persons 

(1) Treatment of successor employers 
Under regulations prescribed by the Secretary, in the case of a successor employer referred to in section 3306 (b)(1), the determination of the amount of the credit under this section with respect to wages paid by such successor employer shall be made in the same manner as if such wages were paid by the predecessor employer referred to in such section.
(2) Treatment of employees performing services for other persons 
No credit shall be determined under this section with respect to remuneration paid by an employer to an employee for services performed by such employee for another person unless the amount reasonably expected to be received by the employer for such services from such other person exceeds the remuneration paid by the employer to such employee for such services.
[1] See References in Text note below.
[2] So in original. The comma probably should not appear.