Moving from a 70% VA disability rating to 100% happens one of three ways: your combined rating actually reaches 95% or higher (which rounds up to 100%), you qualify for Total Disability based on Individual Unemployability (TDIU), which pays at the 100% rate even if your combined schedular rating is lower, or you're granted a 100% Permanent and Total (P&T) rating outright based on the severity of your conditions. In 2026, a veteran alone at 70% receives $1,808.45 a month, while a veteran alone at 100% receives $3,938.58 a month, a difference of more than $2,100 monthly. Here is exactly what it takes to get there.
How VA Combined Ratings Actually Work
The VA does not simply add your individual disability ratings together. A veteran with a 70% rating and a new 20% rating does not automatically hit 90%. Instead, the VA uses what's often called "whole person theory." You start at 100% able-bodied, and each disability rating reduces what's left of that 100%, not the original total.
Here's the formula in practice:
- List your ratings from highest to lowest.
- Apply the highest rating to 100% of your "whole person" efficiency.
- Apply the next rating to whatever percentage is left, not the full 100%.
- Repeat for each additional rating.
- Round the final combined number to the nearest 10%.
Example: A veteran with a 70% rating and a new 20% rating for a separate condition.
- Start at 100%. The 70% rating leaves 30% remaining efficiency.
- The 20% rating applies to that remaining 30%, which is 6 percentage points (20% of 30).
- 70% + 6% = 76%, which rounds down to 80% under VA rounding rules (numbers ending in 5 or above round up, below 5 round down).
This is why two conditions that look like they should combine to 90% often land at 80% instead. Small ratings added onto a high base rating produce diminishing returns, which is exactly why many veterans at 70% find it takes several new conditions, or one path like TDIU, to reach 100%.
VA Rounding Rules Near the Top
Because the VA rounds combined values to the nearest 10%, the real target for a veteran trying to reach 100% is a combined value of 95% or higher, since that rounds up to 100%. A combined value of 94% rounds down to 90%. This makes the difference between 100% and 90% sometimes come down to a single 10% rating for one more diagnosed condition.
| Combined Value (Before Rounding) | Rounds To |
|---|
| 85% to 94% | 90% |
| 95% to 100%+ | 100% |
| 75% to 84% | 80% |
If you're sitting at 90% and believe you have an undiagnosed or untreated condition connected to service, even a modest 10% rating for that condition can be the difference that pushes your math over the 95% threshold.
The Bilateral Factor
If you have service-connected conditions affecting both sides of a paired body part (both knees, both shoulders, both hands, both feet), the VA applies a bilateral factor. The two ratings are combined using standard VA math first, and then an additional 10% is added to that combined bilateral value before it's folded back into your overall rating. Veterans with symmetrical injuries (common in infantry, combat arms, and manual labor roles) often underestimate how much this adds to their combined total. If you have a rated condition on one side of your body and haven't filed for the same condition on the other side, that's worth reviewing.
Three Paths From 70% to 100%
Path 1: File for New or Secondary Conditions
Every condition you can connect to service, either directly or as secondary to an already-rated condition, adds to your combined math. A secondary condition is a disability caused or aggravated by a condition you're already service-connected for. You don't need a new nexus to your military service itself, only evidence connecting the new condition to the one the VA has already accepted.
Common secondary conditions veterans with a 70% rating pursue include:
- Sleep apnea secondary to PTSD, weight gain from limited mobility, or a rated respiratory condition
- Depression or anxiety secondary to chronic pain conditions
- Radiculopathy (nerve pain in arms or legs) secondary to a rated back condition
- Hypertension secondary to PTSD or kidney conditions
- Erectile dysfunction secondary to certain medications, diabetes, or prostate conditions
- Migraines secondary to a rated neck or head injury
Filing a secondary claim generally requires a medical nexus letter or opinion linking the new condition to the already-rated one, plus current medical evidence of the diagnosis.
Path 2: File for an Increase on an Existing Condition
If a condition has worsened since your last rating decision, you can file a claim for increase at any time. There's no waiting period to file, but if the VA denies the increase, you generally need to wait for a new C&P exam cycle or submit new and material evidence before reapplying for the same condition. Conditions that commonly increase in severity over time include back and joint conditions, mental health conditions, and hearing loss.
Path 3: TDIU (Total Disability Individual Unemployability)
TDIU lets a veteran receive compensation at the full 100% rate even when their combined schedular rating is below 100%, if their service-connected disabilities prevent them from holding substantially gainful employment.
Basic TDIU eligibility:
- One condition rated at 60% or more, OR
- Two or more conditions with a combined rating of 70% or more, with at least one condition rated at 40% or more
- Evidence that your service-connected disabilities, not age or non-service-connected conditions, prevent you from working
A veteran already at 70% with one condition rated at 40% or higher already meets the schedular threshold for TDIU consideration. The application is VA Form 21-8940, and it typically requires a statement of work history, an employer statement if applicable, and often a vocational assessment showing why the conditions prevent substantially gainful employment. TDIU pays at the 100% compensation rate but does not always carry every ancillary benefit tied to a schedular 100% rating, so it's worth understanding the distinction before you file.
2026 VA Disability Pay Rates: 70% vs 100%
These are the current monthly compensation rates, effective December 1, 2025, and in place through the 2026 rate year.
| Dependent Status | 70% Rating | 100% Rating |
|---|
| Veteran alone | $1,808.45 | $3,938.58 |
| Veteran with spouse | $1,961.45 | $4,158.17 |
| Veteran with spouse and 1 child | $2,074.45 | $4,318.99 |
| Veteran with 1 parent (no spouse) | $1,931.45 | $4,114.82 |
The gap between 70% and 100% is more than $2,100 a month for a single veteran, and it widens with each added dependent. Veterans rated 100% may also qualify for Special Monthly Compensation (SMC) if they have additional severe impairments like loss of use of a limb, blindness, or need for aid and attendance, which pays above the standard 100% rate.
Step-by-Step: How to File
- Gather medical evidence. Get current treatment records for any new or worsening conditions, plus a nexus letter from a treating physician connecting secondary conditions to your already-rated ones.
- Choose your claim type. File a claim for increase (existing condition worsened), a new secondary condition claim, or a TDIU application, depending on your situation.
- File VA Form 21-526EZ for standard claims, or VA Form 21-8940 for TDIU, through va.gov/disability/apply, by mail to your regional VA office, or in person.
- Work with an accredited VSO. Veterans Service Organizations like the DAV, VFW, or American Legion file and track claims at no cost and know how to document secondary conditions properly.
- Attend your Compensation & Pension (C&P) exam. The VA schedules an exam to evaluate the severity of the condition being claimed. Be specific and consistent about how the condition limits your daily function and ability to work.
- Track your claim. Use your va.gov account to monitor claim status and respond quickly to any requests for additional evidence.
Frequently Asked Questions
What combined rating do I need to reach 100%?
You need a combined value of 95% or higher before rounding, since VA rounding rules push anything 95% and above up to 100%. Anything from 85% to 94% rounds down to 90%.
Can I get 100% VA disability without a 100% combined rating?
Yes, through TDIU. If your service-connected disabilities prevent you from holding substantially gainful employment and you meet the schedular thresholds (one condition at 60%, or a combined 70% with one condition at 40% or more), you can receive the 100% compensation rate.
How long does it take to go from 70% to 100%?
Timelines vary widely. A straightforward secondary condition claim with strong medical evidence can take a few months. Claims requiring a new C&P exam, additional evidence requests, or an appeal can take a year or more. TDIU claims often take longer because they require vocational and employment documentation.
Does adding a new condition always increase my combined rating?
Not always by as much as expected. Because of VA math, a new low rating (like 10%) applied on top of a high existing rating (like 70%) adds only a small percentage to your combined total, sometimes not enough to change your rounded rating at all.
What is the difference between 100% schedular and TDIU?
A 100% schedular rating means your combined disability ratings mathematically equal 100%. TDIU pays at the same monthly rate as 100% schedular but is based on unemployability rather than combined ratings reaching 100%. Some ancillary benefits, like eligibility for Chapter 35 education benefits for dependents, can differ depending on which type of 100% rating you hold.
Is TDIU permanent?
TDIU can be permanent or subject to periodic review, depending on whether the VA determines your condition is likely to improve. Veterans over 55, or those whose conditions are static or worsening, are more likely to be granted permanent TDIU without future review exams.
Should I use an accredited VSO to file?
Accredited Veterans Service Organizations file claims at no cost and are trained specifically in documenting secondary conditions, TDIU applications, and appeals. Using one does not slow down or reduce the outcome of a claim and often improves the quality of the initial filing.
If you're a veteran or veteran's family member checking what other benefits you may qualify for alongside VA disability compensation, including Medicaid, SNAP, or ACA marketplace subsidies, use the Benefits Navigator screener to see a full picture of what's available based on your household and income.
