Hello,

IFS means Indian foreign service and IRS is Indian revenue service. IFS monthly salary is 60 k and IRS monthly salary is 30 to 70k. IFS get house, car , free air travel and IRS get house, car. So this is the main accommodation they both get. Now IFS work for Indian embassy and IRS main work for tax service commission. Both department are good and government service job. Now choice is yours which you want to get join.

All the best.