Best Signifyd Alternatives in 2026
Signifyd sells guaranteed fraud protection for ecommerce: it approves or declines orders and takes on the chargeback liability for what it approves, priced as a share of the order value it covers. That is a genuinely different purchase from a detection API, and it is the right one for some merchants. Teams look elsewhere when the economics stop working at their margin, when they want to keep the decision in-house, or when the fraud they have is not a chargeback at all — promo abuse, multi-accounting, or resellers behind residential proxies. This guide is honest about which problem each option solves.
Why look for a Signifyd alternative?
A guarantee is insurance, and insurance is priced on expected loss plus margin. That is excellent value when your chargeback rate is high and painful, and poor value when it is already low — you are then paying a percentage of good orders to cover a risk you were mostly absorbing anyway. The first reason teams move is that arithmetic changing as they clean up. The second is control: a guarantee provider has to be conservative enough to protect its own book, so declines you disagree with are not fully yours to overrule, and the model is not tuned to your margin structure. The third is scope. Chargeback liability covers card fraud. It does not cover a customer creating forty accounts to farm a referral bonus, a reseller using residential proxies to beat a per-customer purchase limit, or an automated checkout clearing a limited drop — those cost real money and never produce a chargeback for anyone to guarantee.
What to look for in a replacement
- Whether your actual loss is chargebacks, or abuse that never produces one
- Effective cost as a percentage of good orders, not just of fraud caught
- Whether you want to own the decline decision or delegate it
- Coverage for multi-accounting and promo abuse, which guarantees exclude
- Residential proxy and antidetect signals for reseller and bot purchasing
- What happens to approval rates during a sale, a drop, or a traffic spike
Five Signifyd alternatives, honestly compared
Maskbreak is a real-time fraud detection API aimed at the network and device layer: residential proxies, antidetect browsers, Tor, and datacenter IPs across 400+ detection signals, with a sub-40ms median server decision time behind Cloudflare's edge. Integration is a single request, with official Node (@sentinelsup/sdk), Python (sentinelsup) and PHP (sentinelsup/sdk) SDKs, and deterministic test tokens so fraud paths can run in CI. A hosted MCP server (free) lets AI agents screen IPs with live verdicts. It does not guarantee anything and takes on no chargeback liability: if you want someone to underwrite your card fraud, that is a fundamentally different purchase.
Forter is the closest direct comparison: real-time approve or decline on the whole transaction with liability taken on for approved orders, aimed at large merchants and usually sold with an approval-rate argument rather than a fraud-caught one. If the guarantee model works for you and the relationship does not, this is the smallest change. Expect the same commercial shape and the same conservatism about declines. See the Forter alternatives guide.
Sift scores across payment fraud, account abuse and content abuse and hands you the score plus a rules engine, rather than taking liability. That is the right shape if the reason for leaving Signifyd is that you want to own the decline threshold and tune it against your own margins. You keep the chargebacks, which is exactly the trade. Quote-only pricing. See the Sift alternatives guide.
Kount, now part of Equifax, offers order fraud scoring with an established rules engine and identity data behind it, and is a reasonable substitute when you want a scored decision from an incumbent with a long ecommerce track record. It is a heavier integration than an API call and, like Signifyd, is quoted rather than published. See the Kount alternatives guide.
Castle scores user actions — registration, login, address change, payout — which is where a lot of ecommerce loss actually starts, well before a payment is attempted. If your problem is account takeover or bonus farming rather than stolen cards, this addresses it more directly than any order-level guarantee can, with published plans. It is not a payment fraud product. See the Castle alternatives guide.
Catch the abuse a chargeback guarantee never covers
Multi-accounting, promo abuse and proxy-masked resellers cost real money and never produce a chargeback. Maskbreak is free in open beta — 1,000 requests per hour, no credit card.
Frequently Asked Questions
What are the main Signifyd competitors?
Forter is the closest like-for-like guarantee provider. Sift and Kount are the options if you want a score and keep the decision, and the chargeback, yourself. Castle addresses account abuse around the order rather than the order itself. Maskbreak covers the network and device layer — residential proxies, antidetect browsers, multi-accounting — which guarantee products explicitly exclude.
How much does Signifyd cost?
Signifyd does not publish pricing. Guarantee products are typically charged as a percentage of the order value they cover, so the effective cost scales with your good orders as well as your fraud. Whether that is good value depends heavily on your current chargeback rate and margin.
Is a chargeback guarantee worth it?
It is, when your chargeback rate is high enough that the premium is less than the losses plus the cost of running fraud review yourself. It stops being worth it as your rate falls, because you keep paying a percentage of good orders for a risk you were already absorbing. The honest test is to compare the quoted rate against your actual current loss, not against your worst month.
Does Signifyd cover promo abuse and multi-accounting?
No. A guarantee covers chargeback liability on approved orders, which means card fraud. A customer creating forty accounts to farm a referral bonus, or a reseller using residential proxies to beat a purchase limit, pays with a real card and never files a chargeback — so nothing is guaranteed and nothing is caught. That loss needs detection at the account and device layer.