A Regular Bill is for transactions that are usually at the same interval (Subscriptions, Gas Bill, etc.). Each time you record the transaction, you want to close it and advance it to the next period.

An Expense Budget usually has multiple transactions of varied amounts (Groceries, Eating Out, and Entertainment) during the period of the budget. When you record a transaction, you can choose to close out the budget for that period or whether you anticipate further transactions.

Single Deposit is any income that happens at a set interval, such as a biweekly paycheck, social security benefit, or rental income. Each time you record the transaction you want to close it and advance it to the next period.

Multiple Deposits (Budget) usually has multiple transactions of varied amounts during a recurring time period (Daily business deposits, tips, or commissions). When you record a transaction you can choose whether you want to close out the income budget for that period or whether you anticipate further deposits.