SLCSP stands for Second Lowest Cost Silver Plan, which is the second-lowest priced health insurance plan in the Silver category that was available when you applied for insurance at Healthcare.gov or your state's Health Insurance Marketplace.
It's the standard used to calculate your Premium Tax Credit, even if you're on a different plan.
In most cases, you'll find your SLCSP premium on your 1095-A in column B. You can use the Health coverage tax tool to get your SLCSP if it isn't on your 1095-A.
