Net of the UBI? Sure. A UBI which is exactly as redistributive as the existing welfare system would reduce taxes (or increase the UBI you receive) by the difference in the administrative costs between the existing welfare system and the UBI.
And that's before the economic benefits of increasing the incentive to work for low and middle income people by not reducing their government transfer payments when they get a job.
And that's before the economic benefits of increasing the incentive to work for low and middle income people by not reducing their government transfer payments when they get a job.