Tempted
 to help out by lending your signature and good credit history to 
someone? Your participation could indeed make a difference. Credible, an
 online loan marketplace, 
examined
 about 8,000 loans and found that undergraduates looking for loans who 
had co-signers qualified for loans with (mostly variable) interest rates
 averaging 5.37 percent. Students flying solo got a 7.46 percent quote.
For
 graduate students, the numbers were 4.59 percent for duos and 6.21 
percent for people going it alone. For its average undergraduate loan — 
$19,232, paid off in eight years — the savings over time would be 
$1,896, which comes to about $20 a month.
But co-signing comes with plenty of risk. The Consumer Financial Protection Bureau outlined a number of them in a 
report
 it issued last year. In theory, most lenders provide a process by which
 the co-signer can be removed from the loan at the primary borrower’s 
request.
Perhaps the biggest concern for co-signers ought to be the bureau’s 
assertion
 last year that lenders turn down 90 percent of the borrowers who apply 
for these releases. The bureau’s director, Richard Cordray, described 
the process as “broken.”
But
 Sallie Mae said that more than half of its borrowers who make this 
request succeed. For PNC, the figure was 45 percent for the last 12 
months. Citizens Bank reported a 64 percent number, while Wells Fargo 
said so few people had asked for a release that it did not track the 
number. (It’s possible that many don’t know that it’s possible, as the 
bureau chided lenders for not making the rules clear.)
What
 accounts for this gap? The bureau’s sample includes many loans that the
 original lenders sold to investors. These anonymous loan owners may not
 have the same incentive to be customer-friendly as big-name banks.
Some
 co-signers can’t get a release because the primary borrower doesn’t 
have sufficient income or a good enough credit score — fair and square. 
But sometimes it’s neither fair nor square. The bureau reports numerous 
instances where people make several months’ worth of payments in a lump 
sum but then don’t get credit for the consecutive monthly payments that 
some lenders use to keep score on people who are aiming to release their
 co-signers.
Worse
 still, co-signers who make payments themselves may discover after the 
fact that the lender requires the primary borrower to make years of 
on-time monthly payments before it will consider a release. So efforts 
by the co-signer to help the primary borrower stay on track may foil 
their very attempt to get themselves off the loan later.
There
 are rarer horrors, too, where the death or the bankruptcy of the 
co-signer causes an automatic default, according to the bureau. At that 
point, a mourning child can receive a bill for the full balance, and 
debt collectors may chase after the executor of the estate for a dead 
grandfather who co-signed a loan years ago. The big banks that offer 
private student loans say they do no such things.
As
 for more likely events, like credit-sullying late payments, just 4.37 
percent of borrowers were at least 30 days late on their loans at the 
end of the first quarter, according to MeasureOne’s look at the big 
private lenders. But it’s not necessarily the same 4.37 percent who are 
overdue at any given moment. Moreover, that number will go higher during
 the next downturn, and there might be more than one bad economic cycle 
during any individual’s tenure as a co-signer.
A 
CreditCards.com survey
 of people who had co-signed on loans of all sorts found that 38 percent
 ended up paying at least some money, 28 percent were aware of damage to
 their credit and 26 percent saw relationships suffer as a result.
So
 where does this leave someone trying to help and tempted to co-sign? 
The tough-love reply goes like this: If you need a private loan as an 
undergraduate especially, then your college of choice is simply not 
affordable. Federal loans plus savings and current income should be 
enough to pay all of your costs, and if they aren’t, then it’s community
 college and living at home for you. And no, we won’t take the debt on 
in our names only or yank money from home equity, since we need to think
 about 
retirement and not be a burden to you later.
But
 can you really bring yourself, as a parent in particular, to deny a 
teenager or an ambitious graduate student a shot at the better 
opportunities that a more prestigious and expensive school might bring, 
as long as the debt isn’t outsize? Even an aspiring engineer who will 
earn plenty?