diff --git a/substrate/bin/node/runtime/src/lib.rs b/substrate/bin/node/runtime/src/lib.rs
index b2c98e6be1..1f0a33756f 100644
--- a/substrate/bin/node/runtime/src/lib.rs
+++ b/substrate/bin/node/runtime/src/lib.rs
@@ -880,6 +880,7 @@ impl pallet_treasury::Config for Runtime {
 	type OnSlash = ();
 	type ProposalBond = ProposalBond;
 	type ProposalBondMinimum = ProposalBondMinimum;
+	type ProposalBondMaximum = ();
 	type SpendPeriod = SpendPeriod;
 	type Burn = Burn;
 	type BurnDestination = ();
diff --git a/substrate/docs/Upgrading-2.0-to-3.0.md b/substrate/docs/Upgrading-2.0-to-3.0.md
index 45da381122..017467ede2 100644
--- a/substrate/docs/Upgrading-2.0-to-3.0.md
+++ b/substrate/docs/Upgrading-2.0-to-3.0.md
@@ -199,6 +199,7 @@ As mentioned above, Bounties, Tips and Lottery have been extracted out of treasu
  	type OnSlash = ();
  	type ProposalBond = ProposalBond;
  	type ProposalBondMinimum = ProposalBondMinimum;
+	type ProposalBondMaximum = ();
  	type SpendPeriod = SpendPeriod;
  	type Burn = Burn;
 +	type BurnDestination = ();
diff --git a/substrate/frame/bounties/src/tests.rs b/substrate/frame/bounties/src/tests.rs
index 912a78c975..3206fce991 100644
--- a/substrate/frame/bounties/src/tests.rs
+++ b/substrate/frame/bounties/src/tests.rs
@@ -117,6 +117,7 @@ impl pallet_treasury::Config for Test {
 	type OnSlash = ();
 	type ProposalBond = ProposalBond;
 	type ProposalBondMinimum = ConstU64<1>;
+	type ProposalBondMaximum = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.
diff --git a/substrate/frame/child-bounties/src/tests.rs b/substrate/frame/child-bounties/src/tests.rs
index 4b713e699f..a6748c47b7 100644
--- a/substrate/frame/child-bounties/src/tests.rs
+++ b/substrate/frame/child-bounties/src/tests.rs
@@ -121,6 +121,7 @@ impl pallet_treasury::Config for Test {
 	type OnSlash = ();
 	type ProposalBond = ProposalBond;
 	type ProposalBondMinimum = ConstU64<1>;
+	type ProposalBondMaximum = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = ();
diff --git a/substrate/frame/tips/src/tests.rs b/substrate/frame/tips/src/tests.rs
index f9ad431c39..0c58a94995 100644
--- a/substrate/frame/tips/src/tests.rs
+++ b/substrate/frame/tips/src/tests.rs
@@ -137,6 +137,7 @@ impl pallet_treasury::Config for Test {
 	type OnSlash = ();
 	type ProposalBond = ProposalBond;
 	type ProposalBondMinimum = ConstU64<1>;
+	type ProposalBondMaximum = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.
diff --git a/substrate/frame/treasury/src/lib.rs b/substrate/frame/treasury/src/lib.rs
index 057ee0c603..c2dd59953b 100644
--- a/substrate/frame/treasury/src/lib.rs
+++ b/substrate/frame/treasury/src/lib.rs
@@ -168,6 +168,10 @@ pub mod pallet {
 		#[pallet::constant]
 		type ProposalBondMinimum: Get<BalanceOf<Self, I>>;
 
+		/// Maximum amount of funds that should be placed in a deposit for making a proposal.
+		#[pallet::constant]
+		type ProposalBondMaximum: Get<Option<BalanceOf<Self, I>>>;
+
 		/// Period between successive spends.
 		#[pallet::constant]
 		type SpendPeriod: Get<Self::BlockNumber>;
@@ -404,7 +408,11 @@ impl<T: Config<I>, I: 'static> Pallet<T, I> {
 
 	/// The needed bond for a proposal whose spend is `value`.
 	fn calculate_bond(value: BalanceOf<T, I>) -> BalanceOf<T, I> {
-		T::ProposalBondMinimum::get().max(T::ProposalBond::get() * value)
+		let mut r = T::ProposalBondMinimum::get().max(T::ProposalBond::get() * value);
+		if let Some(m) = T::ProposalBondMaximum::get() {
+			r = r.min(m);
+		}
+		r
 	}
 
 	/// Spend some money! returns number of approvals before spend.
diff --git a/substrate/frame/treasury/src/tests.rs b/substrate/frame/treasury/src/tests.rs
index b6d23440a7..26189f5201 100644
--- a/substrate/frame/treasury/src/tests.rs
+++ b/substrate/frame/treasury/src/tests.rs
@@ -115,6 +115,7 @@ impl Config for Test {
 	type OnSlash = ();
 	type ProposalBond = ProposalBond;
 	type ProposalBondMinimum = ConstU64<1>;
+	type ProposalBondMaximum = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.