The BEA has this definition:
The 1st sentence is OK: Personal saving is personal income less the sum of personal outlays and personal current taxes. Although I’d quibble over and taxes, since presumably taxes would be included under “outlays”, otherwise it’s pretty straightforward: Savings is income minus spending (“outlays”). And it makes it clear that we’re talking about a flow rather than a stock: not the total amount of savings, but the amount accumulated over a particular period of time.
The second sentence is more problematic. It is the current saving of individuals…
Well, it’s not really the current saving of individuals. It’s the the amount saved over some particular period of time - or more specifically, between two particular dates. (Say, 1941 and 1942, for example.)
Using the word “current” makes it sound like they’re talking about a stock, rather than a flow. If you asked somebody what her current savings are, she’d probably give you a number that represented a stock of money (her savings account, for example) not the difference between spending and income between two dates.
The rest of the sentence I’m going to pretty much ignore (“private noninsured welfare funds” – what the heck is that?) except to say that it seems to explicitly exclude two sectors: corporations, and the government.
The last sentence is the worst: Personal saving may also be viewed as the net acquisition of financial assets (such as cash and deposits, securities, and the change in life insurance and pension fund reserves), plus the net investment in produced assets (such as residential housing, less depreciation), less the net increase in financial liabilities (such as mortgage debt, consumer credit, and security credit), less net capital transfers received.
“Net acquisition of financial assets” makes it sound as if changes in asset values are considered part of savings. I’d don’t think they are, and it certainly wouldn’t make sense if they were, but at the very least it’s confusing. I’m not sure what “net investment in produced assets” means exactly, but the example sounds as if spending on your home is “saving”, rather than spending.
I understand the concept (you buy granite countertops: the value of your home goes up, therefore you’re “saving”). But it seems like once you start down that road, things get confusing very fast. What if granite goes out of style? Is the amount of savings the (theoretical) increase in the value of the home, or the cost of installing the counters? What if you install them yourself?
What about other “produced assets”, like your car? Or any other thing that you buy? Does “produced assets” mean some other than things that exist (have been produced) and have market value?
Anyway, thanks in advance, for clarifying my confusion.