Financing
Spread the cost of your build. OneFastShop offers Shop Pay Installments, powered by Affirm, so you can split eligible purchases into smaller payments at checkout.
How It Works
- Add your parts to the cart and go to checkout.
- Select Shop Pay as your payment method.
- Choose Pay in installments and pick the plan that fits.
- Complete a quick eligibility check. If approved, your order is placed and ships on our normal schedule.
Your payments are managed in the Shop app or at shop.app. Affirm is the originator and servicer of the installment plan.
Payment Options
| Plan | Order size | Interest |
|---|---|---|
| Pay in 4, four equal payments every two weeks | $50 to $999.99 | 0% APR, no interest |
| Pay monthly, 3, 6, or 12 months depending on amount | $150 to $20,000 | 10% to 36% APR based on eligibility |
Example: an $800 purchase could be split into 4 interest free payments of $200 every 2 weeks, or 12 monthly payments of $72.21 at 15% APR.
There are no late fees or hidden fees. You can pay off a monthly plan early without penalty.
Eligibility
- You must be 18 or older with a US billing address and a US mobile number, and pay in USD
- The order total must be between $50 and $20,000
- Pay in 4 accepts supported debit and credit cards. Monthly plans accept supported debit cards only
- Prepaid cards, Capital One cards, and Chase credit cards are not accepted
- Gift cards cannot be purchased with installments
Pay in 4 does not affect your credit score. Monthly plans may be reported to a credit bureau, and late or partial payments can affect your eligibility for future installment purchases.
Returns on Installment Orders
Returns follow our standard Refund Policy. When a refund is issued, it is applied to your installment plan through Shop Pay and Affirm. Any payments already made above the remaining balance are returned to your original payment method. Interest already paid on a monthly plan is not refunded.
Questions
For questions about an existing installment plan, payments, or your Shop Pay account, visit shoppay.affirm.com. For questions about your order, email support@onefastshop.com.
Rates from 0% to 36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. Terms are set by Shop Pay and Affirm and may change.