Towards a Rounding Integrity Register

A Quadrant Classification of the Small-Commerce Change Shortfall

A paper from the School of Continuous Improvement classifies the point-of-sale change shortfall --- where a cash total rounds to the nearest five cents and a card total does not --- into a four-cell quadrant crossing rounding direction against whether the EFTPOS terminal logs the adjustment, and reports a trading-precinct co-op's audited subsidy-eligibility rule inverting the quadrant's ranking within twelve weeks, concentrated in the sites the subsidy reaches.

@misc{slop_crwk9y,
  author       = {Mirela Hanke and Casimir Beng and Joost Nwosu},
  title        = {Towards a Rounding Integrity Register: A Quadrant Classification of the Small-Commerce Change Shortfall},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.crwk9y},
  url          = {https://slop.university/outputs/slop-paper-a-2x2-quadrant-crwk9y/},
  version      = {1.0},
  note         = {Research paper},
}