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TDIU pays veterans at the 100% disability compensation rate when service-connected disabilities prevent them from maintaining substantially gainful employment -- even if their combined schedular rating falls below 100%. Under Rice v. Shinseki (2009), TDIU is considered part of any claim for increased compensation, not a separate freestanding claim. The governing regulation is 38 C.F.R. 4.16.
To qualify under the schedular pathway, you need either one service-connected disability rated at 60% or higher, OR a combined rating of 70% or higher with at least one disability rated at 40% or higher. For threshold purposes, disabilities of the same etiology, from a single accident, affecting a single body system, or incurred as a POW may be treated as a single disability.
Quick Threshold Check:
Single disability at 60%+ = qualifies
Combined 70%+ with one condition at 40%+ = qualifies
Combined 70%+ but no single condition at 40% = does NOT meet schedular threshold (but may still qualify extraschedular)
The following examples apply the combined ratings table at 38 C.F.R. § 4.25 to the schedular thresholds at 38 C.F.R. § 4.16(a). Rounding to the nearest 10% follows § 4.25.
A. Single disability at 60% -- qualifies
One service-connected disability rated 60%. Meets the single-disability prong. No combined-rating math required.
B. 40% + 30% + 30% -- qualifies
Combined: 40, then 40 + 18 = 58, then 58 + 12.6 ≈ 71, rounded to 70%. One disability at 40%+, combined ≥ 70%. Meets the second prong.
C. 30% + 30% + 30% -- does NOT meet schedular
Combined: 30, then 30 + 21 = 51, then 51 + 14.7 ≈ 66, rounded to 70%. Combined is 70%, but no single disability is rated 40%+. Fails the second prong's 40% requirement. May still qualify under 4.16(b) extraschedular.
D. 40% + 40% -- does NOT meet schedular
Combined: 40, then 40 + 24 = 64, rounded to 60%. Has a 40% disability but combined falls short of 70%. Fails the second prong's combined-rating requirement. May still qualify under 4.16(b) extraschedular.
Enter each service-connected disability rating. The checker applies 38 C.F.R. § 4.25 combined-rating math and tests the 4.16(a) schedular prongs. Bundling under 4.16(a)(1)-(5) and the bilateral factor under 4.26 are not applied automatically -- enter bundled values manually if applicable.
Enter at least one service-connected disability rating above.
For purposes of the 60% and 40% threshold prongs, 38 C.F.R. § 4.16(a) directs that the following groups of disabilities be counted as one disability:
1. Disabilities of one or both upper extremities, or of one or both lower extremities, including the bilateral factor where applicable.
2. Disabilities resulting from common etiology or a single accident.
3. Disabilities affecting a single body system -- e.g., orthopedic, digestive, respiratory, cardiovascular-renal, neuropsychiatric.
4. Multiple injuries incurred in action.
5. Multiple disabilities incurred as a prisoner of war.
The bilateral factor itself is a separate computation under 38 C.F.R. § 4.26, which adds 10% of the combined value when paired body parts are involved. Bundling under 4.16(a) and the bilateral factor under 4.26 are distinct rules and can both apply to the same claim.
If you do not meet the schedular thresholds but are still rendered unemployable by service-connected conditions, your claim must be referred to the Director of Compensation Service for extraschedular consideration under 38 C.F.R. 4.16(b). The Director's decision is not final -- it can be appealed to the Board of Veterans' Appeals. M21-1, Part III, Subpart iv, Chapter 6, Section B covers the extraschedular referral procedures.
Having a job does not automatically disqualify you from TDIU. Under 38 C.F.R. 4.16(a), employment is marginal when earned annual income does not exceed the federal poverty threshold for a single person. The 2025 poverty threshold is $15,650 and the 2026 threshold is $15,960. Employment in a protected or sheltered work environment (family business, sheltered workshop, or a position with special accommodations) may also be considered marginal regardless of income.
VA evaluates your employment history, education, and vocational background -- but age and non-service-connected conditions are not considered under 38 C.F.R. 4.16. Veterans receiving TDIU for 20 or more continuous years receive protection from reduction under 38 C.F.R. 3.951(b), except in cases of fraud.
File VA Form 21-8940 (Veteran's Application for Increased Compensation Based on Unemployability). This form asks about your employment history, education, and how your service-connected disabilities affect your ability to work. Your employer may also receive VA Form 21-4192 (Request for Employment Information in Connection with Claim for Disability Benefits).
Evidence Commonly Included with TDIU Claims:
• VA Form 21-8940 -- core application (required)
• VA Form 21-4192 -- employer's report of employment / reason for separation
• Detailed work history -- job titles, dates, hours, accommodations, reasons for leaving each position
• Education and vocational training records
• Medical records documenting functional limitations from service-connected conditions
• Vocational opinion or independent medical opinion addressing employability
• Social Security Administration disability records, if any (supportive only -- SSA standards differ from VA's)
The following are recurring legal errors documented in Board of Veterans' Appeals decisions and Court of Appeals for Veterans Claims case law. Each one is grounded in regulation:
1. Considering age as a factor
38 C.F.R. § 4.19 prohibits considering age in evaluating service-connected disability. A rater who relies on a veteran's age to deny TDIU has misapplied the regulation.
2. Considering non-service-connected conditions
38 C.F.R. § 4.16 limits the unemployability inquiry to service-connected disabilities. NSC conditions, hobbies that fail, or general life circumstances cannot be the basis for denial.
3. Failing to refer below-threshold cases for extraschedular
Under 38 C.F.R. § 4.16(b), VA must refer the case to the Director of Compensation Service when schedular thresholds are not met but the evidence raises unemployability. A blanket denial without referral is a procedural error.
4. Applying the wrong employment standard
The standard is "substantially gainful employment," not "any work." Sporadic, marginal, or sheltered work does not defeat a TDIU claim. See Faust v. West, 13 Vet. App. 342 (2000).
On February 17, 2026, VA published an interim final rule amending 38 C.F.R. § 4.10 that would have allowed examiners to rate disabilities based on functioning with medication -- potentially lowering veterans below TDIU thresholds. VA Secretary Collins halted enforcement on February 19, 2026. On February 27, 2026, VA formally rescinded the interim final rule (Federal Register 2026-03940) and restored the prior regulatory text. The underlying litigation in Ingram v. Collins remains on appeal at the Federal Circuit, but the medication rule itself is no longer in effect.
38 C.F.R. § 4.16(a) -- Schedular TDIU thresholds + single-disability bundling38 C.F.R. § 4.16(b) -- Extraschedular TDIU referral38 C.F.R. § 4.19 -- Age may not be considered in evaluating disability38 C.F.R. § 4.25 -- Combined ratings table38 C.F.R. § 4.26 -- Bilateral factor38 C.F.R. § 3.951(b) -- 20-year protection from reduction38 C.F.R. § 4.10 -- Functional impairment (medication-rule target, rescinded 2026-02-27)M21-1, Part IV, Subpart ii, Chapter 2, Section F -- TDIU adjudicationRice v. Shinseki, 22 Vet. App. 447 (2009) -- TDIU is part of any increased rating claimFaust v. West, 13 Vet. App. 342 (2000) -- Substantially gainful employment standard
Use the Combined Rating Calculator to check whether you meet the 60%/70% schedular thresholds. Explore secondary conditions that could push you above the threshold. If you are close, even a 10% secondary can make the difference between qualifying and not.
Educational information only. Not legal or medical advice. Not affiliated with the U.S. Department of Veterans Affairs. Consult a VSO or accredited representative before making decisions about your VA benefits.