Why VA effective dates matter
Your rating answers “how much,” but the effective date answers “starting when.” That second question often controls thousands of dollars in back pay. This calculator uses common patterns: a filing anchor (claim or timely intent to file) and the date entitlement arose, then estimates the later of those dates.
After you have a date estimate, run the back pay calculator with your rating from the combined rating tool or pay chart.
Limits of this model
Continuous pursuit, liberalizing laws, and newly discovered service records can change effective dates. Always compare with your decision letter and an accredited VSO. Not affiliated with the VA.