VA combined rating calculator and whole person math

Remaining Efficiency = 100% - Preceding Combined Percentage
New Disability Impact = Remaining Efficiency × New Rating Percentage
New Cumulative Disability = Preceding Combined Percentage + New Disability Impact

Step-by-step worked example using 38 CFR 4.25

To see the combined ratings table logic in action, examine a veteran who has received service connection for three separate medical conditions:

1. Post-traumatic stress disorder rated at 50 percent
2. Lumbar spine strain rated at 30 percent
3. Tinnitus rated at 10 percent

Step 1: Order the ratings by severity

Federal regulations require ranking all service-connected disabilities from highest percentage to lowest percentage before performing the calculation. In this example, the conditions are ordered as 50 percent, then 30 percent, then 10 percent.

Step 2: Combine the first two ratings

Begin with a healthy baseline of 100 percent. The most severe disability is evaluated first:

• The 50 percent rating is deducted from 100 percent whole-person efficiency.
• Disability impact: 50 percent.
• Remaining whole-person efficiency: 100 percent minus 50 percent equals 50 percent.

Next, take the 30 percent back condition and apply it against the remaining 50 percent efficiency:

• 30 percent of 50 percent remaining efficiency equals 15 percent (0.30 × 50 = 15).
• Add this 15 percent to the initial 50 percent rating.
• Cumulative combined evaluation: 50 percent plus 15 percent equals 65 percent.
• Remaining whole-person efficiency: 50 percent minus 15 percent equals 35 percent.

Step 3: Combine the third rating

Apply the final 10 percent tinnitus rating against the remaining 35 percent efficiency:

• 10 percent of 35 percent remaining efficiency equals 3.5 percent (0.10 × 35 = 3.5).
• Add this 3.5 percent to the preceding 65 percent subtotal.
• Total combined evaluation in Table I of 38 CFR 4.25: 65 percent plus 3.5 percent equals 68.5 percent, which is rounded to the nearest whole number (69 percent) in Table I.

Step 4: Apply statutory rounding rules

Under 38 CFR 4.25, after all disabilities have been combined in Table I, the resulting combined value is converted to the nearest degree of 10 percent. The regulation provides that combined values ending in 1, 2, 3, or 4 are adjusted down to the nearest ten, while values ending in 5, 6, 7, 8, or 9 are adjusted up. Because the Table I combined value of 69 ends in 9, the final rounded combined rating is 70 percent.

The veteran is paid at the 70 percent compensation tier on the official VA disability pay chart. If the grant has a retroactive effective date under 38 CFR 3.400, our VA back pay calculator demonstrates how monthly retroactive entitlements are calculated across prior payment periods.

The bilateral factor under 38 CFR 4.26

When service-connected disabilities affect paired extremities, the standard whole-person calculation is modified by 38 CFR 4.26, known as the bilateral factor. The Department of Veterans Affairs recognizes that impairment to both arms, both legs, or paired skeletal muscles causes compounding functional limitation compared to an injury affecting only one side of the body.

Qualifying paired conditions

The bilateral factor applies to conditions affecting:

• Both upper extremities, including shoulders, elbows, wrists, and hands
• Both lower extremities, including hips, knees, ankles, and feet
• Paired skeletal muscle groups

Under 38 CFR 4.26(c), the bilateral factor does not apply unless there is a partial disability of compensable degree in each of the two paired extremities or paired skeletal muscles. Conditions do not have to carry the same diagnosis or affect the exact same joint on each side. For example, a right knee limitation of flexion and a left ankle condition qualify together as bilateral lower extremity disabilities. However, disabilities affecting one upper extremity and one lower extremity cannot be combined as a bilateral pair.

How bilateral math is calculated

When qualifying conditions exist, rating specialists do not combine them directly into the general list. Instead:

1. All qualifying bilateral disabilities are combined with each other first using the 38 CFR 4.25 table.
2. A 10 percent addition of that combined bilateral value is calculated and added directly to the bilateral subtotal.
3. The resulting figure is treated as a single disability evaluation and combined with any remaining non-bilateral conditions in descending order of severity.

Consider a veteran with a 20 percent rating for right knee pain and a 10 percent rating for left knee pain, along with a separate 10 percent non-bilateral tinnitus rating:

• Step A: Combine the bilateral conditions first. Starting from 100 percent, 20 percent leaves 80 percent. Then 10 percent of 80 percent equals 8 percent. Combined bilateral value: 20 plus 8 equals 28 percent.
• Step B: Calculate 10 percent of the 28 percent bilateral subtotal: 28 multiplied by 0.10 equals 2.8 percent.
• Step C: Add 2.8 percent to 28 percent: 28 plus 2.8 equals 30.8 percent, which rounds to the nearest whole integer (31 percent) before entering Table I of 38 CFR 4.25.
• Step D: Combine this 31 percent bilateral value with the remaining 10 percent tinnitus rating in Table I: 100 minus 31 leaves 69 percent efficiency, and 10 percent of 69 equals 6.9 percent (31 plus 6.9 equals 37.9, which is 38 in Table I).
• Step E: Convert to the nearest ten percent under 38 CFR 4.25: 38 ends in 8 and rounds up to 40 percent. Without the bilateral factor, 28 percent combined with 10 percent in Table I is 35 (from 35.2), which also rounds to 40 percent, but at tighter rating spreads the bilateral boost frequently pushes claims across rating thresholds.

The 2023 bilateral factor rule update

On April 14, 2023, the Department of Veterans Affairs published an interim final rule in the Federal Register (88 FR 22914, effective April 16, 2023, and adopted as a final rule on December 27, 2023 at 88 FR 89307), creating paragraph (d) of 38 CFR 4.26. Prior to this regulatory fix, certain rounding sequences could inadvertently cause a veteran with bilateral conditions to receive a lower overall combined rating than if the conditions were evaluated without the bilateral factor.

Under 38 CFR 4.26(d), in cases where the combined evaluation is lower than what could be achieved by not including one or more bilateral disabilities in the bilateral factor calculation, those bilateral disabilities must be removed from the bilateral factor calculation and combined separately to achieve the combined evaluation most favorable to the veteran.

Rounding conventions and threshold bands

Because monthly disability compensation is distributed in fixed 10 percent increments, understanding exact numerical thresholds is critical when tracking claim outcomes. Because Table I of 38 CFR 4.25 rounds each intermediate combination to a whole integer, the standard rounding bands under 38 CFR 4.25 operate as follows:

Reaching a 100 percent schedular rating requires accumulating a combined value of 95 percent or higher in Table I of 38 CFR 4.25. A veteran at 90 percent combined disability who has a Table I value of 86 percent requires an additional 70 percent disability rating to reach the 95 percent threshold (since 86 combined with 60 in Table I is 94, which rounds down to 90 percent, whereas 86 combined with 70 is 96, which rounds up to 100 percent). This steep curve is why many severely disabled veterans unable to secure 95 percent combined evaluations explore Total Disability based on Individual Unemployability (TDIU) under 38 CFR 4.16.

How dependents affect monthly compensation amounts

A common question among veterans using rating calculators is whether adding a spouse, child, or dependent parent increases the combined rating percentage.

Under federal statute 38 U.S.C. 1115, dependents do not alter the combined percentage itself. The combined rating reflects medical impairment alone. Instead, qualifying dependents adjust the monthly dollar payment associated with your rating, provided your combined evaluation is at least 30 percent:

• At 10 percent and 20 percent ratings, compensation is paid strictly at the veteran-alone rate, regardless of marital status or number of dependent children.
• At 30 percent through 100 percent ratings, under 38 U.S.C. 1115 and 38 U.S.C. 101(4)–(5), the Department of Veterans Affairs adds supplemental monthly allowances for a legal spouse; unmarried children (including biological, legally adopted, and qualifying stepchildren) who are under age 18, who became permanently incapable of self-support before age 18, or who are between ages 18 and 23 (up to their 23rd birthday) pursuing a course of instruction at an approved educational institution; and dependent parents (including biological, adoptive, or persons who stood in loco parentis for at least one year before the veteran entered active service).

To receive dependent compensation, veterans must submit VA Form 21-686c (Application Request to Add and/or Remove Dependents), VA Form 21-674 for school-age children, or VA Form 21P-509 for dependent parents, along with required supporting documentation.

Where to get accredited help with your claim

Navigating whole-person math, bilateral groupings, and rating disputes requires accurate legal knowledge. Veterans and surviving family members should never pay upfront fees for initial claim preparation. Free, accredited representation is available nationwide through:

• Veterans Service Organizations (VSOs) such as the Disabled American Veterans (DAV), Veterans of Foreign Wars (VFW), and The American Legion
• State and County Veteran Service Officers
• VA-accredited claims agents and VA-accredited attorneys for complex administrative appeals

To verify that an individual or organization is officially recognized to represent claimants before the Department of Veterans Affairs, consult the official VA Office of General Counsel Accreditation Search.