The software has many rules based on a rent payment due on the first of the month.
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If a move-in-date is mid month, the landlord must start the move in on the first of the next month and manually collect a pro rated rent payment for this partial month in advance of the system rules.
This business rule allows the rent payment system to be accurate and follow laws.
Note: The accounting system does not have the same rules and a landlord can post any rent revenue with any amount.
Prorated rent calculator: https://myrentalmgmt.com/blog_articles/prorated-rent-calculator
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