What do the codes mean in Box 13 of the K-1 for S Corporations?
Credits
A: Zero-emission nuclear power production credit*
B: Credit for production from advanced nuclear power facilities*
C: Low-income housing credit (section 42(j)(5)) from post-2007 buildings*
D: Low-income housing credit (other) from post-2007 buildings*
E: Qualified rehabilitation expenditures (rental real estate)
F: Other rental real estate credits*
G: Other rental credits*
H: Undistributed capital gains credit
I: Biofuel producer credit
J: Work opportunity credit
K: Disabled access credit (See the Shareholder's Instructions)
L: Empowerment zone employment credit
M
N: Credit for employer social security and Medicare taxes
O: Backup withholding
P: Unused investment credit allocated from qualifying advanced coal or gasification credit allocated from cooperatives
Q: Unused investment credit from qualifying advanced energy project credit allocated from cooperatives
R: Unused investment credit from the advanced manufacturing investment credit from cooperatives
S: Unused investment credit from clean electricity credit allocated from cooperatives
T: Unused investment credit from the energy credit allocated from cooperatives
U: Unused investment credit from the rehabilitation credit allocated from cooperatives
V: Advanced manufacturing production credit*
W: Clean electricity production credit*
X: Clean fuel production credit*
Y: Clean hydrogen production credit*
Z: Orphan drug credit
AA: Enhanced oil recovery credit
AB: Renewable electricity production credit
AC: Biodiesel and renewable diesel credit**
AD: New markets credit
AE: Small employer pension plan startup costs and contributions credit
AF: Credit for small employer auto-enrollment
AG: Credit for small employer military spouse retirement plan eligibility
AH: Employer-provided child care credit
AI: Low sulfur diesel fuel production credit
AJ: Railroad track maintenance credit
AK: Oil and gas production from marginal wells
AL: Distilled spirits credit
AM: Energy efficient home credit
AO: Alternative fuel vehicle refueling property credit
AP: Clean renewable energy bond credit*
AQ: New clean renewable energy bond credit*
AR: Qualified energy conservation bond credit*
AS: Qualified zone academy bond credit*
AT: Qualified school construction bond credit*
AU: Build America bond credit*
AV: Employer differential wage payments
AW: Carbon oxide sequestration credit
AX: Carbon oxide sequestration credit recapture*
AY: New clean vehicle credit
AZ: Qualified commercial clean vehicle credit
BA: Health insurance credit
BB: Employer credit for paid family and medical leave
BC: Eligible credits from transferor(s) under section 6418*
ZZ: Other - The corporation will provide information you may need to claim a credit not included above. Most credits identified by ZZ will be on Form 3800, Part III.
All other codes are reserved by the IRS for future use.
*Not supported* Some codes require additional forms or adjustments that aren't currently supported by FreeTaxUSA. In this case, you may need to file another way.
** Sustainable aviation credit not supported
See the Schedule K-1 (Form 1120-S) instructions for more info about these codes.
What if the boxes on my K-1 don't match?
A: Zero-emission nuclear power production credit*
B: Credit for production from advanced nuclear power facilities*
C: Low-income housing credit (section 42(j)(5)) from post-2007 buildings*
D: Low-income housing credit (other) from post-2007 buildings*
E: Qualified rehabilitation expenditures (rental real estate)
F: Other rental real estate credits*
G: Other rental credits*
H: Undistributed capital gains credit
I: Biofuel producer credit
J: Work opportunity credit
K: Disabled access credit (See the Shareholder's Instructions)
L: Empowerment zone employment credit
M
N: Credit for employer social security and Medicare taxes
O: Backup withholding
P: Unused investment credit allocated from qualifying advanced coal or gasification credit allocated from cooperatives
Q: Unused investment credit from qualifying advanced energy project credit allocated from cooperatives
R: Unused investment credit from the advanced manufacturing investment credit from cooperatives
S: Unused investment credit from clean electricity credit allocated from cooperatives
T: Unused investment credit from the energy credit allocated from cooperatives
U: Unused investment credit from the rehabilitation credit allocated from cooperatives
V: Advanced manufacturing production credit*
W: Clean electricity production credit*
X: Clean fuel production credit*
Y: Clean hydrogen production credit*
Z: Orphan drug credit
AA: Enhanced oil recovery credit
AB: Renewable electricity production credit
AC: Biodiesel and renewable diesel credit**
AD: New markets credit
AE: Small employer pension plan startup costs and contributions credit
AF: Credit for small employer auto-enrollment
AG: Credit for small employer military spouse retirement plan eligibility
AH: Employer-provided child care credit
AI: Low sulfur diesel fuel production credit
AJ: Railroad track maintenance credit
AK: Oil and gas production from marginal wells
AL: Distilled spirits credit
AM: Energy efficient home credit
AO: Alternative fuel vehicle refueling property credit
AP: Clean renewable energy bond credit*
AQ: New clean renewable energy bond credit*
AR: Qualified energy conservation bond credit*
AS: Qualified zone academy bond credit*
AT: Qualified school construction bond credit*
AU: Build America bond credit*
AV: Employer differential wage payments
AW: Carbon oxide sequestration credit
AX: Carbon oxide sequestration credit recapture*
AY: New clean vehicle credit
AZ: Qualified commercial clean vehicle credit
BA: Health insurance credit
BB: Employer credit for paid family and medical leave
BC: Eligible credits from transferor(s) under section 6418*
ZZ: Other - The corporation will provide information you may need to claim a credit not included above. Most credits identified by ZZ will be on Form 3800, Part III.
All other codes are reserved by the IRS for future use.
*Not supported* Some codes require additional forms or adjustments that aren't currently supported by FreeTaxUSA. In this case, you may need to file another way.
** Sustainable aviation credit not supported
See the Schedule K-1 (Form 1120-S) instructions for more info about these codes.
What if the boxes on my K-1 don't match?
