The Real Cost of 100% Principal Protection
Full protection looks like the safest note on the calendar. The upside you hand over is only half of what it costs, the tax treatment is the other half, and three August offerings manage to be worth it anyway.
By Titu Bhowmick
A note that hands back every dollar you put in, whatever the market does in between, sounds like the one structured note nobody could argue with. Thirty-five of the 135 notes on my August list were built that way. An advisor I have been trading emails with will not buy any of them, and I agree with him more than I expected to. Where we part ways is the size of a bad year. And the reason I would skip most of these notes in a taxable account has nothing to do with markets at all. It is the tax code.
The advisor who will not touch them
Craig Novorr is president and CIO of Paragon Capital Management, and he has run a structured note program for clients since 2014-15. He does not buy off the monthly calendars. He has a bank price a note to his own terms and closes the same day, which means he chooses his own protection level instead of picking from whatever got printed that month. Full protection is not a level he ever chooses:
"We would never do a 100% principal protected. That is completely unnecessary and eats into your upside. There is zero chance that the market goes down 100% and if it does, the bank will be bankrupt and your protection is out the window."
He is right, and it is worth sitting with why. Protection is not free. Every point of it is paid for out of your upside, and the points between a 50% fall and a 100% fall are points you will never use. The S&P 500 does not go to zero while the financial system stays standing. On an ordinary note, the guarantee is only as good as the issuing bank anyway, so the deepest slice of the protection insures you against a world where the insurer is already gone. You are buying coverage for an event that voids the policy.
One wrinkle before I push back: that argument applies to notes, not to market-linked CDs. Two of the three structures I like at the end of this piece are CDs, and FDIC insurance up to the applicable limits survives the issuing bank's failure. The solvency half of the objection does not reach them. The upside half still does.
A 40% drop is not exotic
Novorr's floor depends on the structure. On growth notes he uses 20% buffers, because the market can swing 10% in a day. A buffer is hard protection: it absorbs the first 20% of a decline no matter how deep the fall goes, so a 48% crash reaches the client as a 28% loss, not 48%. On income notes he goes further out, with barriers at 70% or 55% of the starting level, which is 30% or 45% of downside protection, checked only at maturity. That is real coverage, and my unease is not with his structures. It is with the size of the events that make people want protection in the first place. Peak-to-trough declines in the S&P 500, price only:
| Episode | Decline |
|---|---|
| 1973-74 | about 48% |
| Dot-com, 2000-02 | about 49% |
| Financial crisis, 2007-09 | about 57% |
| Covid, February to March 2020 | about 34% in 33 days |
| 2022 | about 25% |
Every one of those blew past 20%. Three cleared 40%. A 40% fall has happened roughly once every decade and a half, and anyone pricing it as a freak event is arguing with the record.
The honest counterpoint is that most growth notes measure protection once, at maturity, so what matters is where the index sits on that one date, not the worst tick along the way. A five-year note struck at the October 2007 peak matured in late 2012 with the index down about 8%, comfortably inside a 20% buffer, even though the ride included a 57% collapse. The worst five-year point-to-point outcomes in modern history land closer to 20% or 25% down than to 40%. Novorr runs the same math on his income barriers, which are checked at maturity, usually about three years out, and the record backs him. His 45% protection level has never been breached in the past half century: even a note struck at the exact top of the dot-com bubble, about the worst purchase date available since the 1970s, finished three years later inside it. The 30% level held through 1973-74, 2008-09, and 2020 as well, and gave way only for notes bought in the run-up to that same 2000 top. So deep protection observed at maturity has historically been enough. But "historically enough" and "excessive" are different claims. Somewhere between Novorr's 20% growth buffer and the full 100% is where I want to live, and the closer terms let me get to covering a 40% print, the better I sleep. What I am not willing to pay for is the stretch from 50% to 100%.
That was where I thought the argument ended: full protection costs too much upside for coverage nobody needs. Then I read the tax sections.
Taxed on income you never received
Once a note promises all your principal back, the IRS generally stops seeing a bet and starts seeing debt. The usual result is the contingent payment debt instrument regime, and its effects are strange enough to spell out.
The offering document states something called a comparable yield, roughly what the issuer would pay on plain senior debt of the same maturity. Today that lands around 4% to 5%. You accrue that yield as ordinary interest income every year and pay tax on it, even though the note pays you nothing until maturity. No coupon, no cash, a tax bill anyway. This is not fine print I am extrapolating from. The BofA pricing supplement linked below says you "will be required to include income on the Notes over their term based on the comparable yield." Morgan Stanley's CD disclosure says nearly the same thing. FDIC insurance does not help you here; a market-linked CD accrues the same phantom income as a note.
Put $100,000 into a five-year fully protected note with a 4.5% comparable yield. You report about $4,500 of ordinary interest in year one, a bit more each year as the accrual compounds, roughly $24,600 of reported income over the five years. At a 35% marginal rate that is about $8,600 of tax paid out of your own pocket in years when the note distributed exactly zero dollars. If the index goes nowhere and you just get your $100,000 back, the accounting trues up at maturity with a negative adjustment and an ordinary loss. On paper it washes out. In practice you lent the Treasury money for five years against income that never existed.
Compare that with a growth note that does not have full protection. Those are generally treated as prepaid forward contracts: nothing accrues while you hold one, and the gain shows up once, at maturity, generally as long-term capital gain. Two notes from the same issuer in the same month can deliver the same gross return and leave you with meaningfully different money.
The usual cautions apply, because this is the murkiest corner of the product. Treatment turns on each note's specific terms and the issuer's own disclosure. Coupons are ordinary income in any wrapper, so this comparison is sharpest for growth structures. And the prepaid forward treatment has never been finalized by the IRS, which asked for comments in 2007 and then went quiet. The practical rule is simple: read the tax section of the pricing supplement before you buy, and if you find the phrase "comparable yield," you will be accruing phantom income and your accountant should hear about it first.
The three I would still consider
After all that, it may be strange to hear that three of the fully protected structures on my August list look genuinely good to me:
| CUSIP | Issuer | Structure | Terms |
|---|---|---|---|
| 09712CMH3 | BofA Finance, guaranteed by Bank of America | 5-year note | 1.35x uncapped participation |
| 61779WAM2 | Morgan Stanley Bank, N.A. | 5-year FDIC-insured CD | 1.33x uncapped participation |
| 46661DGF5 | JPMorgan Chase | 5-year, 100% protected | 1.35x uncapped participation |
All three ride the S&P 500 Futures Excess Return Index, all three are uncapped, and all three hand back every dollar at maturity if the index finishes flat or down. (The Morgan Stanley participation prices in a 1.33x to 1.38x range; the JPMorgan document was not public when I wrote this.)
The usual way a fully protected note pays for itself is a cap, a seven-year tenor, or an index the bank assembled to move less than anything you would recognize. These do none of that. Uncapped, five years, and better than 1x on an index that tracks S&P 500 futures. That combination is rare, and it is why I keep them on the list despite everything above.
The cost is still there, just quieter. A futures excess return index gives you the S&P 500's price moves minus a financing charge, and you collect no dividends, so over five years it should trail the plain S&P 500 total return by a few percentage points a year. That drag is what buys the floor. The issuers also tell you what the package is worth on day one: BofA estimates $920 to $970 per $1,000 note, Morgan Stanley about $968 per $1,000 CD. And the phantom income clock starts either way.
Where they belong
Held in a tax-deferred account, every tax objection above evaporates. Phantom income is not a problem when nothing is taxed until withdrawal, and what remains is a clean question about terms. Uncapped 1.35x with a full floor is a good answer to that question. An IRA is where I would put all three.
The other honest use is money that genuinely cannot fall: tuition due in five years, a down payment with a date on it. A buffer improves your odds; it does not remove the possibility of loss, and some money has no tolerance for a possibility.
In a regular taxable account, I would still rather hold a deep buffer on a real index than full protection, because the buffer covers every five-year outcome that has actually occurred and does not bill me each April for income I never saw. Novorr gets to the same place by refusing the calendar entirely and building his own protection level bank-direct. Different routes, same destination, and neither one runs through the market falling 100%.
Educational content only, not investment, legal, or tax advice, and not a solicitation to buy any security. Nothing here is a recommendation of the notes or CDs named above; two of the three documents linked are preliminary and terms may change at pricing. Tax treatment depends on each note's specific terms and your own circumstances, so read the tax discussion in the relevant offering document and talk to your own tax adviser before buying. Structured notes are unsecured obligations of the issuing bank and are exposed to that bank's credit risk; market-linked CDs are FDIC insured only up to applicable limits.