Do you need both CE and FCC certification?

Yes — if your hardware product is sold in both the EU and the US, you need CE marking for the EU and the applicable FCC authorization for the US, in full, as two independent processes. Neither one substitutes for the other, and there's no shortcut where passing one waives a requirement of the other, even though the underlying electrical-safety and EMC engineering overlaps considerably.

Why they don't substitute for each other

CE marking is an EU self-declaration covering whichever harmonised directives apply to your product — Low Voltage, EMC, Radio Equipment, RoHS and others, depending on what the device does. FCC authorization is a US requirement under an entirely separate legal system, governed by 47 CFR Part 15, and split between Certification (for intentional radiators like Wi-Fi and Bluetooth devices, which need an FCC ID) and Supplier's Declaration of Conformity (for unintentional radiators — most other digital electronics). A product needs to clear both regimes independently to be sold legally in both regions.

Where the engineering work overlaps

The two regimes test genuinely similar things — electromagnetic compatibility, RF emissions, electrical safety — which is why hardware teams often bundle CE and FCC pre-compliance testing into the same lab engagement, even though the certificates and declarations that come out the other end are entirely separate documents governed by different legal regimes. A single EMC test session can often generate data useful for both the EU technical file and the US test report, which is the real cost saving — not a shortcut on the requirement itself.

What actually differs between them

• Who checks your work. CE is a self-declaration with no pre-market filing; FCC Certification (for intentional radiators) requires a formal grant from an FCC-recognized Telecommunication Certification Body before you can sell — SDoC, for unintentional radiators, is closer to CE's self-declaration model.
• What gets restricted. RoHS and REACH substance restrictions are EU-specific; the US has no direct federal equivalent at the FCC level (California's Prop 65 is a separate, state-level US disclosure requirement, not a federal electronics regulation).
• Labeling. CE requires the CE mark itself plus, where applicable, other markings (WEEE bin symbol, battery labeling); FCC-certified intentional radiators require the FCC ID and Part 15 statement, while SDoC devices need a simpler compliance statement without an ID.

Practical sequencing

Design your EMC and safety testing plan around both regimes from the start if you know you're launching in both markets — retrofitting FCC testing onto a product engineered purely to EU EMC limits (or vice versa) sometimes surfaces a marginal failure that a joint test plan would have caught first time. See our CE marking requirements and FCC Certification vs SDoC guides for what each process specifically requires.