A furlough notice from the federal government will say how many days you will be furloughed, so you can calculate the reduction in your take-home income. But if you’re about to be furloughed or laid off from a private-sector job, you’ll have to estimate how much income you’ll lose. If you have the luxury of a full-time job and are just planning for the possibility of a pay reduction, set aside some money for a rainy day. Save your change in a jar. Siphon off a little here and there from your checking account. Create a safety net over time. You’ll feel better the next time some financial belt tightening is in order.