Keep your receipts
Check our work.
The sources behind the explanation, the arithmetic behind the numbers, and the limits of each example.
EP02 · Health insuranceHealth insurance, taken apart
Allowed amounts, deductibles, coinsurance, annual limits and the EOB. Includes a free worksheet.
Read the sources and calculations →EP01 · Cards & creditHow Credit Cards Actually Work
Follow the $100: authorization, merchant fees, statements, purchase grace and interest.
Read the sources and calculations →