INSEE's index dropped five points to 80 in October, against expectations of 85. Views of personal finances deteriorated sharply as perceived inflation climbed. The saving climate slipped but stayed well above average.
French household confidence is at its lowest in more than 13 years.
INSEE said on Tuesday that its household confidence index fell to 80 in October from a revised 85 in September, the lowest reading since June 2013. Economists had expected the index to hold at 85. The long-run average is 100.
Where the fall came from
The decline was driven by how households see their own money. The balance for their expected personal financial situation over the next year fell nine points to minus 24, against a long-run average of minus 7. Their assessment of their past financial situation fell to minus 32 from minus 26.
Prices sit behind that. The balance of households who say prices have risen over the past year climbed to 42 from 34, and it stood at 18 in July. Fears of unemployment rose to 61 from 56. The balance of households who think now is a good time to make a major purchase fell to minus 41 from minus 37.
What has not cracked
The saving climate slipped again, to 118 from 120, but remains well above its average.
That combination describes households that feel poorer because of what they already pay, are less willing to make large purchases and still see saving as worthwhile. It is a squeeze, not yet a panic.
Inflation expectations add a warning. The balance for prices over the year ahead rose again, to minus 7 from minus 9. The move this month was small, but the balance is up 25 points since July and well above its long-run average.
Why it matters beyond the shops
Consumer spending is a large source of tax revenue, and France's public finances are already under scrutiny. If households follow through and cut back on purchases, value-added tax receipts would weaken, making deficit targets harder to hit. France's preliminary inflation and third-quarter growth figures are due on Friday, and S&P Global's review of France's credit rating falls on Nov. 27.
The euro was at about $1.114 at 5:38 a.m. Eastern on Tuesday, close to its 52-week low of $1.1113, though the dollar was firmer broadly and the move cannot be tied to the release.
Two readings
One reading is that this is a demand shock that will feed into France's fiscal math. Households expect their finances to worsen, unemployment fears are rising and fewer think it is a good time for major purchases, all of which point to weaker spending and weaker tax receipts.
The other is that this is an energy-price shock with a cushion. The driver is prices households have already paid, and the saving climate remains high. If energy costs ease, confidence could recover, and households have savings to support spending. The caveat is that inflation expectations have been rising since July, which would make a quick recovery harder.
What to watch
Friday's inflation and growth figures, French bond yields relative to Germany's, the European Central Bank's decision on Thursday and the Nov. 27 rating review.