How do IAS, IPS, IFS and IRS compare on power, posting choice and work-life balance?

There is no single 'best' service — only the best fit for your wiring. IAS gives unmatched domestic administrative power and policy reach; IPS gives uniformed authority and operational adrenaline (further entrenched by the CAPF Act 2026 at the senior command level); IFS gives global stage and the cleanest work-life balance abroad; IRS gives cadre stability, financial-law specialisation and the strongest post-retirement market value.