# RBT PDU calculator

> What is the best way to track RBT PDUs?

The most reliable way to track RBT PDUs is to work backwards from your recertification date: record your cycle start, the total units required, and every unit as you earn it, then divide the remaining units by the months left to get a monthly pace. RBTs certifying or recertifying from 1 January 2026 must complete 12 professional development units in each 2-year recertification cycle.

Source page: https://operation-optimize.com/tools/rbt-pdu-calculator
Publisher: Operation Optimize (ABA Team Intelligence)
Last verified against published sources: 2026-08-17

## How it is calculated

- A recertification cycle runs two years from your certification or most recent recertification date.
- In-service PDUs are awarded in half-unit increments — 0.5 for 25 minutes of instruction and 1.0 for 50 minutes — and partial time is never rounded up.
- The calculator subtracts what you have earned from what you need, counts the days left in the cycle, and converts the shortfall into a per-month pace so the deadline never arrives as a surprise.

Formula: `monthly pace = (units required − units earned) ÷ months remaining in the cycle`

## Worked example

1. An RBT recertifies on 1 March 2026, so the cycle ends 1 March 2028.
2. 12 units are required; 4 have been earned by 1 September 2026.
3. 8 units remain with about 18 months left.
4. 8 ÷ 18 = 0.44.

Result: About 0.5 units per month keeps the cycle on schedule.

## Official sources and effective dates

- BACB RBT continuing professional development requirement — Effective 1 January 2026 — https://www.bacb.com/rbt/
- BACB RBT Handbook — Current edition — https://www.bacb.com/wp-content/uploads/2022/01/RBTHandbook_240808-a.pdf

## Related questions

### How many PDUs does an RBT need?

12 professional development units per 2-year recertification cycle for RBTs certifying or recertifying from 1 January 2026.

### What counts as a professional development unit?

Qualifying instruction such as in-service training, coursework or approved continuing education, documented with the date, duration and topic.

### How is in-service PDU time counted?

0.5 units for 25 minutes of instruction and 1.0 unit for 50 minutes. Time is not rounded up, so a 40-minute in-service is 0.5 units.

### Do PDUs carry over to the next cycle?

No. Units are earned and reported within the cycle in which they occur.

### What is the difference between a PDU and a CEU?

PDUs are the RBT professional development requirement. CEUs are the continuing education requirement for BCaBA and BCBA certificants, with different totals and content rules.

### What documentation should I keep?

Keep a certificate or attendance record for each unit with the date, duration, topic and provider, and store them where you can retrieve them at audit.

## Save your result

A Professional Passport is permanently free for individuals. It stores your cycle, your unit history and the certificates that back them up — and it stays with you if you change employer. Start free at https://operation-optimize.com/auth.

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