Direct answer: PIO (Public Information Officer) is the generic term under the RTI Act for any designated officer who handles RTI applications — CPIO specifically refers to the Central PIO in central government authorities, while APIO (Assistant PIO) handles receipt and forwarding of applications at sub-offices but cannot himself provide information or refuse.
The RTI Act uses “PIO” as the generic label. In practice three roles exist:
PIO / CPIO: The officer actually responsible for receiving, processing and responding to RTI requests. In central government bodies this officer is called the CPIO (Central Public Information Officer). In state government bodies the same role is called the PIO (or SPIO — State PIO, though this term is informal). The obligation, deadline (30 days) and penalty exposure are identical.
APIO: The Assistant Public Information Officer sits at sub-district or taluka-level offices. An APIO's sole legal function is to receive RTI applications and fees, and forward them to the PIO within 5 days under §5(2). The APIO cannot supply information and cannot refuse it — they are a post-office, not a decision-maker. The RTI Act explicitly says that forwarding via APIO gives the applicant an extra 5 days (§7(1) reads the 30-day clock from the PIO, not the APIO).
| Role | Level | Legal duty | Can refuse? | Penalty exposure? |
| CPIO | Central govt authority | Respond within 30 days | Yes (§8/§9) | Yes (§20) |
| PIO | State govt authority | Respond within 30 days | Yes (§8/§9) | Yes (§20) |
| APIO | Sub-district office | Forward within 5 days | No | Only for failing to forward |
Yes. §7(1) says the clock is 30 days from receipt by the PIO. When you file through an APIO, the APIO has 5 days to forward. So your effective window is 35 days from APIO receipt. If the PIO has not responded by day 35, it is a deemed refusal.
Yes — and preferred. You can file directly at rtionline.gov.in (central ministries) or by Speed Post directly to the CPIO. Using the APIO is optional, usually for rural applicants who prefer a local office.
Some large organisations (like the Supreme Court, UIDAI) designate a single nodal CPIO who coordinates all RTI responses. You file to the nodal CPIO; they route internally to the right section and provide a consolidated response.
Last reviewed: May 2026. Part of the RTI Wiki definitions series.