TDIU pays the 100% rate to eligible veterans whose service-connected conditions prevent substantially gainful employment - regardless of whether combined math reaches 100%. This is the single highest-anxiety question in our Q&A corpus, and the answer is educational: understand the standard, gather the functional evidence, and take it to an accredited representative.
What unlocks at this level
TDIU pays the 100% compensation rate for eligible veterans - regardless of combined math (source: VA.gov individual unemployability program page; 38 CFR 4.16)
The standard is substantially gainful employment - marginal employment is excluded by the rule (source: VA.gov individual unemployability eligibility)
One qualifying single condition exists in the rule (source: 38 CFR 4.16(a) - the single-condition route with its rating thresholds)
Verification rider: every item cites its source page at VA.gov or the named official source; each row is re-verified quarterly.
What to check next
Functional evidence is the center of a TDIU question: what the conditions stop you from doing at work, documented.
Read the Combined Ratings Explainer to know why combined math may not reach 100 - and why TDIU does not run through combined math.
Take a completed picture to a free accredited VSO; verify accreditation at the official VA accreditation search.
Bring it to a free accredited representative
Stand Easy Network teaches the process. A free, VA-accredited VSO (DAV, VFW, American Legion, county veterans service officers, and others) takes it from here. Never pay an unaccredited consultant for claims help - accredited representatives are free, and paid help is limited by law to specific accredited classes.
In crisis?
If you're a veteran in crisis, call the Veterans Crisis Line now: dial nine eight eight, then press one. Free, confidential, 24/7. Prefer to text? Message 838255. Or chat live at veteranscrisisline.net. For immediate danger, call 911.