How much does a co-signer save on a car loan? The payment, with and without one
Financing · Co-Signers · The MathHow much does a co-signer save on a car loan? The payment, with and without one
Quick answer A co-signer changes the credit tier the lender prices your loan in, not the vehicle or the term. On a $30,000 loan for 72 months, moving from the subprime tier to prime with a co-signer saves about $98 a month on a new vehicle and $157 on a used one, roughly $7,073 to $11,328 over the loan, and usually reduces the down payment the lender asks for. If nobody can co-sign, buy with money down, make 12 on-time payments and refinance. No doc fee, free Oklahoma delivery.
What a co-signer actually changes: the rate
A co-signer does not change the price of the vehicle, the term, or the tax. It changes which credit tier the lender prices the loan in. The lender underwrites the stronger file, so a buyer in the 500s with a prime co-signer usually gets priced near prime, not subprime. Here is what each tier costs on a $30,000 loan for 72 months, using Experian’s most recent published tier averages for new and used:
| Credit tier | Avg. APR new / used | Payment, new | Payment, used | Total interest, new | Total interest, used |
|---|---|---|---|---|---|
| Super prime (781+) | 5.2% / 6.8% | $486 | $509 | $4,987 | $6,619 |
| Prime (661–780) | 6.7% / 9.1% | $507 | $542 | $6,515 | $9,042 |
| Near-prime (601–660) | 9.8% / 13.9% | $553 | $617 | $9,798 | $14,393 |
| Subprime (501–600) | 13.2% / 18.9% | $605 | $700 | $13,588 | $20,370 |
| Deep subprime (300–500) | 15.8% / 21.6% | $647 | $747 | $16,617 | $23,761 |
Tier averages move every quarter and the lender that approves you sets the actual rate. Oklahoma tax, title and tag are added to the amount financed. Carter does not charge a doc fee or an addendum.
How much a co-signer saves, in dollars
Take a buyer in the subprime tier and add a co-signer who lands the loan in the prime tier. Same vehicle, same 72 months, nothing down:
| Loan | Payment alone (subprime) | Payment with prime co-signer | Saved per month | Saved over 72 months |
|---|---|---|---|---|
| New vehicle, $30,000 | $605 | $507 | $98 | $7,073 |
| Used vehicle, $30,000 | $700 | $542 | $157 | $11,328 |
| New vehicle, $20,000 | $404 | $338 | $65 | $4,715 |
| Used vehicle, $20,000 | $466 | $362 | $105 | $7,552 |
On a $30,000 new vehicle the co-signer is worth about $98 a month, or about $7,073 over the loan. On a used vehicle the gap is wider, about $157 a month, because used rates run higher at every tier. The co-signer also often makes the difference between an approval with 15–20% down and one with little or nothing down.
When a co-signer is worth asking for, and when it is not
Worth it
Score under 600, a thin or brand-new file, income that is real but hard to document, or a recent bankruptcy or repo. The savings above are the case to make to the person you ask. First-time buyers are the most common.
Probably not needed
Score 640 and up with steady income and 10% down. Most of our lenders approve that file alone at a near-prime or prime rate; a co-signer might shave a point, which on $30,000 is about $15 a month.
Not the fix
If the problem is payment-to-income, a co-signer does not raise your income unless they are a co-buyer whose income is counted. A lower-priced vehicle or more money down fixes that; see what lenders want down by score.
What the co-signer takes on
The whole loan, on their credit report, with no claim to the vehicle. The way out is a refinance in your name after 12–24 clean payments. The full explanation is on the co-signer vs. co-buyer page.
The alternative: buy alone now, refinance later
If nobody is available to co-sign, the subprime payment is not forever. Twelve on-time payments move most buyers up a tier, and a refinance at that point captures much of the savings in the table above without anyone else on the hook. On the $30,000 new-vehicle example, refinancing from the subprime tier to near-prime after a year saves roughly $44 a month for the remaining term. We will tell you when your file looks ready. What a 550 score pays now, and how to bring it down.
How to run it both ways
Pre-qualify alone first
A soft pull on our site shows your estimated tier with no score impact. If it comes back prime or near-prime, you may not need anyone.
Send both applications together if you do
Your application plus the co-signer’s, same day. We run the file alone and with the co-signer across the lenders and show you both payments.
Pick the payment, not the title
Co-signer keeps the title in your name only; co-buyer puts both names on it and counts both incomes. We explain which the lender is offering before anything is signed.
How Carter handles a credit application
One application, more than 50 lenders
You fill out one application. We have more than 50 lenders available, over half of them subprime specialists, and we send it to the ones most likely to approve your file. We show you what comes back and you pick the one that fits.
The price doesn’t move
Same price whether you finance with us, your own bank, or pay cash. No doc fee, no addendum, no “financing surcharge.” That’s the number on the website, and it’s the number on the contract.
We tell you the truth about the number
If the approval needs more money down, a different vehicle, or a co-signer, we say so before you drive 35 minutes to Okarche. If it’s not going to work this month, we tell you what would make it work in three.
Delivery anywhere in Oklahoma
Free anywhere in Oklahoma on any purchase. Paperwork can be done remotely.
Frequently asked questions
How much does a co-signer lower a car payment?
On a $30,000 loan for 72 months, moving from the subprime tier to the prime tier with a co-signer saves about $98 a month on a new vehicle and about $157 on a used one, using Experian's published tier averages. Over the loan that is roughly $7,073 to $11,328.
Does a co-signer guarantee approval?
No, but it changes the file the lender underwrites. A co-signer with a 660-plus score and steady income usually moves a subprime application to near-prime or prime pricing and often reduces the down payment the lender wants.
What credit score should a co-signer have?
Most lenders want 660 or better with income that comfortably covers their own obligations plus this payment. A co-signer with a score in the 500s does not help.
Is a co-signer the same as a co-buyer?
No. A co-signer guarantees the loan and is not on the title. A co-buyer is on the loan and the title, and their income counts toward the payment-to-income limit. Both are fully liable for the loan.
Can I remove the co-signer later?
Yes, by refinancing in your own name, usually after 12 to 24 on-time payments. The lender does not release a co-signer otherwise.
What if I cannot find a co-signer?
Buy alone with 10 to 20% down on a lower-priced vehicle, make 12 on-time payments, then refinance. Carter runs one application across more than 50 lenders, more than half of them subprime, so an approval in the 500s is routine with income and money down.
Do you charge a doc fee?
No. Carter Chevrolet does not charge a doc fee or an addendum. Price plus Oklahoma tax, title and tag is the whole number.
Related
Do you need a co-signer? · Credit score and car loans · Payment with a 550 score · Down payment with bad credit · First-time car buyer · Pre-qualify without a credit hit · How much car on $50K a year
All financing subject to credit approval. Rates, terms and down payment requirements are set by the lender and depend on credit history, income, the vehicle and the loan amount. Industry averages quoted on this page are from Experian’s State of the Automotive Finance Market reports and change every quarter; they are context, not an offer.
See both payments on the same vehicle
Text 405-546-1147 with the stock number. We run your application alone and with a co-signer across more than 50 lenders and send you both payments the same day, then deliver anywhere in Oklahoma free.