If your VA disability appeal is approved, you should get back pay all the way back to your effective date. Most veterans will find their effective date is the date they filed the claim. Some veterans may be able to push their effective date back farther. If you file a claim within one year of leaving service, your effective date will be the day you were discharged. Some veterans may even be able to re-open old claims and preserve an effective date that is years old. Understanding how to calculate your effective date is extremely important. For example, if you receive a 100% rating that pays $3,057.13 a month and your effective date is off by one year, that is $36,685.56 in missing VA disability back pay.
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