What are the three basic rules of accounting?

Answer 1

Not too sure of what is being asked, so here goes what I think is being asked.

1st Rule = Debits must always equal credits. The trial balance report show rule this to be true or not true.

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2nd Rule = The accounting equation: Assets = Liabilities + Capital. The purpose of financial statements is to provide proof this equation is in fact true, and balanced to show rule #1 is true

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3rd Rule = Accounting is always double entry, meaning that each transaction must have one debit and one corresponding credit. There is no such thing as single line accounting entry.

So there are three fundamental principles of accounting. All accounting systems, large or small, manual, or automated must meet these fundamental rules.