> i need to be able to show amount in $ of rent due and the period it covers,
> and also if tenant pays a little bit more so they are in credit, how to
> calculate or show that.
There are several ways to do what you want. One of them is to create several
tables:
tblRents
RentID
TenantID
BldgID
Rent
...
tblTenants
TenantID
...
tblRentTransactions
TransactionID
RentID
PeriodCovered
AmtPaid
DatePaid
A query joining tblRents and tblRentTransactions can have added columns
showing and differences between the Rent and the AmtPaid. A second query
based on the first, can show the balance, either due or in credit.

Signature
Arvin Meyer, MCP, MVP
Microsoft Access
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