Month-end dates are handled properly
A schedule starting on the 31st does not roll into the following month. 31 January plus one month gives 28 or 29 February, not 2 March — which is how a bank would read it and how a naive date calculation usually gets it wrong.
Check the schedule against what you already owe
The reason post-dated cheques bounce is almost never insolvency — it is that two agreements landed in the same week and nobody noticed. Before handing over a batch, compare these dates against cheques already outstanding, and against when your own money actually arrives.
Moving a date by a week costs nothing at the point of writing and a great deal afterwards. See managing post-dated cheques.
Cheque numbers must match the paper
The numbers above increment by one from whatever you enter. That is only right if the leaves in your book are sequential and you start from the number actually printed on the first one. Check it against the book in your hand rather than what you ordered.
Nothing is stored
This runs in your browser. Dates, amounts and cheque numbers are not submitted anywhere.
