diff --git a/src/lib.rs b/src/lib.rs
index fb295d3ff9..346ed9cbb1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1402,7 +1402,8 @@ impl Node {
 					total_anchor_channels_reserve_sats(&self.channel_manager, &self.config);
 				let new_channel_reserve =
 					self.new_channel_anchor_reserve_sats(&peer_info.node_id)?;
-				let total_anchor_reserve_sats = cur_anchor_reserve_sats + new_channel_reserve;
+				let total_anchor_reserve_sats =
+					cur_anchor_reserve_sats.saturating_add(new_channel_reserve);
 
 				let fee_rate = fee_rate.unwrap_or_else(|| {
 					self.fee_estimator.estimate_fee_rate(ConfirmationTarget::ChannelFunding)
@@ -1529,7 +1530,7 @@ impl Node {
 
 		if for_new_channel {
 			let required_funds_sats =
-				amount_sats + self.new_channel_anchor_reserve_sats(peer_node_id)?;
+				amount_sats.saturating_add(self.new_channel_anchor_reserve_sats(peer_node_id)?);
 
 			if spendable_amount_sats < required_funds_sats {
 				log_error!(self.logger,
@@ -2717,7 +2718,7 @@ impl_writeable_tlv_based!(NodeMetrics, {
 pub(crate) fn total_anchor_channels_reserve_sats(
 	channel_manager: &ChannelManager, config: &Config,
 ) -> u64 {
-	channel_manager
+	let num_reserved_channels = channel_manager
 		.list_channels()
 		.into_iter()
 		.filter(|c| {
@@ -2729,8 +2730,8 @@ pub(crate) fn total_anchor_channels_reserve_sats(
 					.map_or(true, |s| s != ChannelShutdownState::ShutdownComplete)
 				&& c.channel_type.as_ref().map_or(true, requires_anchor_channel_type)
 		})
-		.count() as u64
-		* config.anchor_channels_config.per_channel_reserve_sats
+		.count() as u64;
+	num_reserved_channels.saturating_mul(config.anchor_channels_config.per_channel_reserve_sats)
 }
 
 pub(crate) fn new_channel_anchor_reserve_sats(
diff --git a/src/liquidity/client/lsps1.rs b/src/liquidity/client/lsps1.rs
index 79dc655fe6..12965ac17f 100644
--- a/src/liquidity/client/lsps1.rs
+++ b/src/liquidity/client/lsps1.rs
@@ -98,7 +98,7 @@ where
 		})?;
 
 		let lsp_limits = self.lsps1_request_opening_params(node_id).await?.supported_options;
-		let channel_size_sat = lsp_balance_sat + client_balance_sat;
+		let channel_size_sat = lsp_balance_sat.saturating_add(client_balance_sat);
 
 		if channel_size_sat < lsp_limits.min_channel_balance_sat
 			|| channel_size_sat > lsp_limits.max_channel_balance_sat
diff --git a/src/liquidity/service/lsps2.rs b/src/liquidity/service/lsps2.rs
index 7f49428d29..14fff4b624 100644
--- a/src/liquidity/service/lsps2.rs
+++ b/src/liquidity/service/lsps2.rs
@@ -445,10 +445,11 @@ where
 				};
 
 				// Fail if we have insufficient onchain funds available.
-				let over_provisioning_msat = (amt_to_forward_msat
-					* service_config.channel_over_provisioning_ppm as u64)
+				let over_provisioning_msat = amt_to_forward_msat
+					.saturating_mul(service_config.channel_over_provisioning_ppm as u64)
 					/ 1_000_000;
-				let channel_amount_sats = (amt_to_forward_msat + over_provisioning_msat) / 1000;
+				let channel_amount_sats =
+					amt_to_forward_msat.saturating_add(over_provisioning_msat) / 1000;
 				let cur_anchor_reserve_sats =
 					total_anchor_channels_reserve_sats(&self.channel_manager, &self.config);
 				let spendable_amount_sats =
@@ -460,7 +461,8 @@ where
 					&their_network_key,
 					anchor_channel,
 				);
-				let required_funds_sats = channel_amount_sats + additional_reserve_required;
+				let required_funds_sats =
+					channel_amount_sats.saturating_add(additional_reserve_required);
 				if spendable_amount_sats < required_funds_sats {
 					log_error!(self.logger,
 						"Unable to create channel due to insufficient funds. Available: {}sats, Required: {}sats",