Waldensians affirm penal substitutionary atonement as the primary and central understanding of Christ's death on the cross. Christ's death was a vicarious, substitutionary sacrifice in which he bore the penalty and wrath of God for sinners. The Waldensian Confession explicitly teaches that Christ's death satisfied divine justice and secured redemption for all who believe.

The atonement is understood not as merely moral or exemplary but as genuinely efficacious — Christ truly paid the penalty for sin and accomplished redemption through his death and resurrection. This understanding stands in full continuity with the broader Reformed theological tradition, particularly as articulated in the Swiss and French Reformed confessions.

While Waldensian theologians may allow for other atonement themes present in Scripture (Christus Victor, moral example), penal substitution is regarded as the controlling and central framework. The efficacy of Christ's atonement is applied to believers through faith, uniting them to Christ and securing their justification before God.