<p>I've run information through multiple calculators, including FinAid, college NPC, college board calculator and fafsa4caster. I also completed the worksheets from "Paying for College" and from IFAP, which apparently is the form used by FAA.</p>
<p>I always came up with about 7 to 8K for EFC online and paper worksheets. I understand that there could be some variation but I figured it to be 500 to 1500 max. I filed FAFSA and SAR came back with EFC of 15,400.</p>
<p>Why would there be such a big difference in EFC using the exact same data input?</p>
<p>AGI is negative 18K (-18) due to sale of rental real estate at a big loss (co-owned property with sister who had big financial emergency). Earned Income is 6300. Informal child support of 19K in 2013 from husband from whom I've been separated for 5 years and I'm custodial parent. No legal separation in our state so no court ordered support, just informal agreement. FAFSA filing status is divorced/separated. Tax filing status is HOH. All criteria met for each status. Savings of 200K, but I use it to live on and need to do so for next 10 years due to medical and family issues. Will not be able to substantially increase earned income and child support will probably lessen as 66 year old ex's job is in jeopardy. 529 with 125K. Daughter with income of 395 and savings of $700.</p>
<p>So I expect to pay a lot but I still can't figure out why there is such a big discrepancy between the methods. I've read something about "assumptions" but don't really know what that means and if that might be the reason for the big difference in SAR and worksheet EFC.</p>