Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why does it seem unnecessary to fully save for irregular periodic expenses?
It totally depends on when your expenses hit and whether you might have a larger stock than necessary. If you run your projections against the monthly save and the intervals of when you'll need the money, you might be able to extract some stock from the account.  I recommend making this a bit simpler. I operate this with an "annuals" account which is a complete aggregate of expenses that I know I have several times per year (or once every two years), but are not monthly or part of a weekly non-fixed expense budget cap. Instead of tracking each expense individually and saving for it, create a spreadsheet that lists out all of these expenses, sum them, and then divide by 12. When I first opened this account, I added a one-time deposit to "catchup" to make sure I would never need to pull money from another source for these expenses. As new expenses come into existence that I should plan for annually, I simply add them to this list and adjust the monthly auto-deposit to the account. This also adjusts my single number weekly budget.  To make it easy, whenever I see an expense on my annuals list on my amex or debit, I simply initiate a withdrawal from the annuals savings and it will balance out my weekly or monthly budget expenses.  The goal of my annuals account is to simply avoid anti-windfalls that are known quantities (insurance, annual eye exam, sprinkler flush, amazon prime, etc) that would throw a wrench in weekly/monthly budget and expense planning. The more variables you can remove from your weekly/monthly, the more regular it becomes and the more likely you will be able to stick to a budget.