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How To Calculate VA Disability Benefits: Understanding VA Math

What is 10+10+10+20+40?

In most environments, math is the same, and that question is easily answered, as 90.

BUT life is not that easy in the VA disability world.

VA assigns a rating between 10% and 100% for each condition that is service-connected.

For instance, a veteran may have sleep apnea rated at 50%, tinnitus rated at 10%, and PTSD rated at 30%. Logic would say that these ratings combine to a 90% rating, but life is not that easy.

In calculating VA disability benefits, the VA COMBINES ratings and does not add ratings. The ratings in this example above combine to 70%.

Did You Know?

Individual ratings of specific conditions are NOT simply added together to come up with a combined rating.

Paired Limbs, Nerve Symptoms, and the “Both Sides” Advantage

When orthopedic conditions impact a knee, foot, hand, or shoulder, there are often several different ratings a veteran may be entitled to. For example, a knee can be rated based on its inability to bend, inability to extend, limited range of motion, instability, and pain. Failure to consider a rating for each of these conditions will leave a veteran with a rating less than the maximum provided by law. When a condition affects both sides of a certain extremity, such as both legs or both arms, the ratings are combined and enhanced for an even higher rating.

Nerve complications deserve separate attention. Spine or joint damage often irritates nerves, creating tingling, loss of sensation, or weakness down an arm or leg. Those neurologic findings can be evaluated separately from the joint rating when the symptoms are genuinely distinct. Ask your provider to document reflex changes, dermatomal patterns, and strength testing, and to explain how those symptoms differ from joint stiffness or reduced motion. A few targeted tests, such as straight-leg raise, Tinel’s sign, or monofilament results, help the reviewer distinguish the nerve picture from the orthopedic picture.

How Does the VA Decide on 70% For A Combination of Ratings?

To calculate VA disability benefits, the VA uses a chart to determine combined disabilities. The chart is found here.

First, take the highest rating of 40% and combine it with 20%, 40% in the vertical column, and 20% in the horizontal column. This gets us a combined rating of 52%.

Secondly, we take the 52% and combine it with the third-highest rating of 10% to reach 57%.

Next, we take the 57% and combine it with the fourth-highest rating of 10% to reach 61%.

Lastly, we take the 61% and combine it with the third-highest rating of 10% to reach 65%. This 65% rounds to 70%.

You can scroll down to see the math behind these tables. You do not need to know the math to calculate the combined rating percentage.

Did You Know?

As the combined rating approaches 100%, the conditions must be more significant.

Symptoms of conditions can change over time. If symptoms have worsened to the extent that the conditions for a higher rating are met, veterans can file to get their rating increased. Conversely, if symptoms have improved of time, the VA may order new examinations, and based on such examinations, propose to decrease a veteran’s rating. When faced with a proposed decrease in rating, veterans should verify that VA has the evidence to support the proposed decrease and follow the due process requirements. If VA either lacks the evidence to support the decrease or fails to provide the necessary due process, the proposed decrease can be voided.

Calculating VA Disability Benefits – VA Math Explained

Some things to remember:

The higher the rating, the harder it is to increase.

It requires a significantly larger rated disability to go from 70% to 90% than it does to go from 30% to 50%.

Sometimes, the introduction of a new rating or a change in rating does not move the combined rating.

For instance, if a veteran is at 88% and receives a new rating that changes their overall rating to 92%, their benefits will not change, as both ratings round to 90%.

Getting from 90% to 100% requires a significant change in disability. To get to 100%, the combined rating must be 95%.

If a combined rating is at 88% and a veteran is awarded 20% for a new condition, the combined rating is 90.4%, which rounds to 90%.

The math:

If you are curious how math works, this is an example of a combination using math.

First, the VA starts by saying the veteran is 100% not disabled. This is our base score.
First Rating = 100% x 50% (first rating) = 50%(new percentage). If we stopped here, the overall percentage would be 100%(base)- 50%= 50% overall rating.

To achieve a second rating, we take specific actions:

50% (new percentage) x 30% (second rating) = 15% take 50%-15%=35%, if we stopped here the overall percentage would be 100%-35%= 65%, which rounded gives you 70%

To achieve a third rating:

35% x 10% (third rating) = 3.5% take 35%-3.5%= 31.5%, stopping here gives an overall percentage of 100%-31.5%= 68.5% which is rounded to 70%.

When Pay Does Not Reach the Top Tier, Yet Work Is Not Possible

In many cases, even though a veteran is unable to work, it is difficult to combine enough single disability ratings to reach 100%. In these situations, individual unemployability (“TDIU”) should be considered. TDIU provides a monthly payout to veterans at the 100% rate, regardless of their percentage rating, where the veteran cannot work due to service-connected disabilities.

TDIU is available for veterans who work under certain circumstances, such as those earning below the poverty level, work performed for a family business, and work performed in a protected environment, which provides accommodations far surpassing those offered in the typical economy.

Where Additional Pay Comes From Beyond the Basic Schedule

The disability schedule does not capture every kind of loss. Congress created separate, monthly additions for certain situations. Two common examples are the small payment for the loss of a specific organ or function, and the “housebound” category for those whose service-connected conditions keep them largely confined to their home. Another path to the housebound rate appears when a veteran has one disability at a total level and separate additional disabilities that add up to a specific threshold. That structure prevents “double counting,” so the record must show that the additional conditions involve different body systems or distinct limitations.

Avoiding overlap is key. If knee pain and nerve pain both cause standing difficulties, the narrative should emphasize how the nerve problem also creates numbness or foot drop, while the joint issue causes mechanical instability. Clinicians help by describing different exam findings and by stating which symptoms belong to which condition. Clear lines between disabilities make it easier to layer these payments lawfully.

Recognizing that the 0% to 100% schedule does not fairly compensate for all service-connected disabilities, Congress created Special Monthly Compensation, which provides additional compensation above the regular rating schedules. Common reasons special monthly compensation is awarded are: loss of limb, blindness, inability to leave one’s home (Housebound), and the need for care provided by others (Aid and Attendance)

Full Pay During Recovery From Surgery or Hospitalization

Certain operations or extended hospital stays can justify a temporary period of full compensation. The goal is to let a veteran focus on recovery without losing income. To qualify, the file must provide proof of the procedure, the length of medically prescribed recovery, and any restrictions, such as no driving, non-weight-bearing, or mandatory rest. Ask the surgeon’s office for the operative report, discharge summary, and follow-up plan. If physical therapy continues past the original estimate, have the therapist document why additional time is medically required. While that temporary increase is pending, continue to address your long-term issues, so you do not risk losing your earlier effective date.

In certain circumstances, VA ratings provide for a rating of 100% while the veteran recovers from surgery or is hospitalized. While such higher ratings are often automatically based on the submission of new evidence, veterans should check their rating codesheets to verify that the entire period of temporary rating was provided.

Don’t let confusing calculations cost you thousands in benefits. Reach out to me at (678) 253-4884 for a free consultation, and let’s make the math work for you.

Frequently Asked Questions

How are ratings that affect bilateral body parts combined?

When both part is affected on both sides of the body, such as a left knee and a right knee, the percentages are combined and given an enhancement. This combined percentage is then treated as one single disability. As this is a substantial benefit, veterans should ensure that both sides are properly rated. Often, service connection for one side can be granted based on a secondary service connection to the other side. For example, instability of the right knee that is service-connected may cause problems with the left knee, which could then be secondarily connected.

What evidence is needed to show that employment in a family business is marginal, and should not count against individualized unemployability?

Employment in a family business can be exempted from counting for purposes of individualized unemployability if such is considered to be marginal. Evidence of marginal employment in a family business can include: working for free or a reduced wage, ability to come and go as the veteran pleases, significant excused absences, and leniency for behavior during work.

Is it possible to seek higher percentages while maintaining my earlier start date?

Yes, a veteran who is awarded service connection can appeal for a higher rating without jeopardizing the effective date of their claim. Appealing for a higher rating for a condition can significantly increase retroactive benefits. Rating level and effective dates for each condition should be closely monitored, as VA often underrates conditions, which results in a significant decrease in veterans disability benefits

When can nerve ratings for a back problem be listed separately without violating the rule against double-counting?

Separate evaluations are appropriate when the nerve symptoms create their own set of limitations, such as loss of feeling, foot drop, or weakness along a specific nerve distribution, and those signs are distinct from the joint or spine’s mechanical limits. Ask your provider to document reflex changes, sensory loss by pattern, and strength differences to clarify the separation.

How can I address a poor C&P examination that is negatively impacting my case?

All too often, the examinations provided by private contractors hired to provide examinations by the VA are poorly conducted. Often, examiners fail to ask the relevant questions needed to document symptoms, underreport symptoms described by a veteran, and incorrectly document the symptoms of the veteran. A veteran facing a poor C&P examination has several options to combat its impact. A veteran can appeal the condition with the inclusion of lay statements from themselves, family, and friends to get the VA order a new examination. A veteran can also submit the report of a private physician disputing the findings of the C&P examination.

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