TaxSlayerOnline status page - if TSO appears to be down, check here before calling.
Core Reference
Pub 4012 (Tax-Aide Nov-01)
Pub 4012 (IRS version)
Pub 17
Pub 4299
Tax-Aide Policies & Procedures (Jan-21)
Tax-Aide Scope (Nov-03)
DP-10 Full Reference (TY2017)
DP-10 Training (TY2020)
MA Non-Resident (TY2019)
ME Non-Resident
Updated 2021-Jan-23
Pub 4012 (IRS version)
Pub 17
Pub 4299
Tax-Aide Policies & Procedures (Jan-21)
Tax-Aide Scope (Nov-03)
New Hampshire
DP-10 Quick Reference (TY2017)DP-10 Full Reference (TY2017)
DP-10 Training (TY2020)
Massachusetts
MA Resident (Jan-03)MA Non-Resident (TY2019)
Maine
ME ResidentME Non-Resident
Updated 2021-Jan-23
Helping Clients
Federal Information
Request a duplicate SSA-1099Request a duplicate SS card
Request a prior year tax transcript
Health Care
Healthcare.govCovering New Hampshire