Contact us

Hours & response time

Monday – Friday

9:00 am – 6:00 pm CT

Saturday (Jan 15 – Apr 15)

10:00 am – 4:00 pm CT

Sunday

Closed

Email and portal messages are answered within one business day. For urgent document or filing questions, include your client code so we can look up your file quickly.

Your messages are handled only by authorized staff and are never used for marketing.

Legal entity

Ascendum Corporate Advisory LLC (Missouri limited liability company)

Platform

Ascen Tax USA — ascentaxus.com

Registered / mailing address

10124 N McKinley Drive, Kansas City MO 64157

Services

Federal and state preparation and e-filing of Forms 1040, 1065, 1120-S, 1120 and 1120-F.

IRS credentials

Returns are prepared by PTIN-holding preparers and transmitted by an IRS-authorized e-file provider. Our EFIN and the signing preparer’s PTIN appear on every return we file for you.

Security & privacy

Trust & Compliance Center · How we handle your SSN

CPAs, EAs and independent preparers work with us through AscenTax Pro. File under your own EFIN or under Ascendum’s, with simple per-return billing and administrator-verified onboarding.

Preparer enquiries: Mehul Shah · tax@ascentaxus.com · (816) 294-5633