Can I order RTB anytime? February 28, 2020 02:49 Updated Yes, you may order anytime through the Bureau of Treasury’s website. Related articles What will be my proof of ownership for RTB? Where do I get the interest payments of RTBs? How often? How do I avail RTBs? Retail Treasury Bonds Tranche 27 (RTB27) How much is the broker’s fee for RTBs?