diff --git a/packages/suite/src/support/messages.ts b/packages/suite/src/support/messages.ts
index a815dbcd33f..a244992a3e3 100644
--- a/packages/suite/src/support/messages.ts
+++ b/packages/suite/src/support/messages.ts
@@ -5805,6 +5805,11 @@ export default defineMessages({
         defaultMessage: 'Rejected by coordinator',
         description: 'Tooltip over an icon in Coin control section',
     },
+    TR_UTXO_NOT_MATURED_COINBASE: {
+        id: 'TR_UTXO_NOT_MATURED_COINBASE',
+        defaultMessage:
+            'Coinbase transaction has to have at least {confirmations} confirmations to be spendable',
+    },
     TR_CHANGE_ADDRESS_TOOLTIP: {
         id: 'TR_CHANGE_ADDRESS_TOOLTIP',
         defaultMessage: 'This is a change address created from a previous send.',
diff --git a/packages/suite/src/views/wallet/send/Options/BitcoinOptions/CoinControl/UtxoSelectionList/UtxoSelection/UtxoSelection.tsx b/packages/suite/src/views/wallet/send/Options/BitcoinOptions/CoinControl/UtxoSelectionList/UtxoSelection/UtxoSelection.tsx
index 4f5dcca640b..63dff2c3091 100644
--- a/packages/suite/src/views/wallet/send/Options/BitcoinOptions/CoinControl/UtxoSelectionList/UtxoSelection/UtxoSelection.tsx
+++ b/packages/suite/src/views/wallet/send/Options/BitcoinOptions/CoinControl/UtxoSelectionList/UtxoSelection/UtxoSelection.tsx
@@ -1,10 +1,10 @@
-import { MouseEventHandler } from 'react';
+import { MouseEventHandler, ReactNode } from 'react';
 
 import styled, { css, useTheme } from 'styled-components';
 
 import { formatNetworkAmount, isSameUtxo } from '@suite-common/wallet-utils';
 import { Checkbox, Row, Spinner, TextButton, Tooltip } from '@trezor/components';
-import type { AccountUtxo } from '@trezor/connect';
+import { AccountUtxo } from '@trezor/connect';
 import { borders, spacings, spacingsPx, typography } from '@trezor/theme';
 import { CheckContainer } from '@trezor/components/src/components/form/Checkbox/Checkbox';
 
@@ -120,6 +120,36 @@ const StyledFiatValue = styled(FiatValue)`
     ${typography.hint}
 `;
 
+type ResolveUtxoSpendableProps = {
+    utxo: AccountUtxo;
+    coinjoinRegisteredUtxos: AccountUtxo[];
+};
+
+// Same as MINIMAL_COINBASE_CONFIRMATIONS in '@trezor/utxo-lib'; It is redeclared here to avoid
+// some magic import/export errors. This is very niche stuff and probably never changes.
+// Also, this most probably bothers only developers on Regtest.
+const MINIMAL_COINBASE_CONFIRMATIONS = 100;
+
+const resolveUtxoSpendable = ({
+    utxo,
+    coinjoinRegisteredUtxos,
+}: ResolveUtxoSpendableProps): ReactNode | null => {
+    if (utxo.coinbase === true && utxo.confirmations < MINIMAL_COINBASE_CONFIRMATIONS) {
+        return (
+            <Translation
+                id="TR_UTXO_NOT_MATURED_COINBASE"
+                values={{ confirmations: MINIMAL_COINBASE_CONFIRMATIONS }}
+            />
+        );
+    }
+
+    if (coinjoinRegisteredUtxos.includes(utxo)) {
+        return <Translation id="TR_UTXO_REGISTERED_IN_COINJOIN" />;
+    }
+
+    return null;
+};
+
 type UtxoSelectionProps = {
     transaction?: WalletAccountTransaction;
     utxo: AccountUtxo;
@@ -155,7 +185,10 @@ export const UtxoSelection = ({ transaction, utxo }: UtxoSelectionProps) => {
     const isChecked = isCoinControlEnabled
         ? selectedUtxos.some(selected => isSameUtxo(selected, utxo))
         : composedInputs.some(u => u.prev_hash === utxo.txid && u.prev_index === utxo.vout);
-    const isDisabled = coinjoinRegisteredUtxos.includes(utxo);
+
+    const unspendableTooltip = resolveUtxoSpendable({ utxo, coinjoinRegisteredUtxos });
+    const isDisabled = unspendableTooltip !== null;
+
     const utxoTagIconColor = isDisabled
         ? theme.legacy.TYPE_LIGHT_GREY
         : theme.legacy.TYPE_DARK_GREY;
@@ -174,7 +207,7 @@ export const UtxoSelection = ({ transaction, utxo }: UtxoSelectionProps) => {
             $isDisabled={isDisabled}
             onClick={isDisabled ? undefined : handleCheckbox}
         >
-            <Tooltip content={isDisabled && <Translation id="TR_UTXO_REGISTERED_IN_COINJOIN" />}>
+            <Tooltip content={unspendableTooltip}>
                 <Checkbox
                     isChecked={isChecked}
                     isDisabled={isDisabled}
diff --git a/packages/utxo-lib/src/coinselect/coinselectUtils.ts b/packages/utxo-lib/src/coinselect/coinselectUtils.ts
index 635c1e565c0..141881dbfb8 100644
--- a/packages/utxo-lib/src/coinselect/coinselectUtils.ts
+++ b/packages/utxo-lib/src/coinselect/coinselectUtils.ts
@@ -39,6 +39,9 @@ const INPUT_SIZE = 160; // 4 * (32 + 4 + 4)
 
 const DUST_RELAY_FEE_RATE = 3; // 3000 sat/kB https://github.com/bitcoin/bitcoin/blob/be443328037162f265cc85d05b1a7665b5f104d2/src/policy/policy.h#L55
 
+/** Coinbase transaction must have at least 100 confirmations to be spendable.*/
+export const MINIMAL_COINBASE_CONFIRMATIONS = 100;
+
 type Vin = { type: CoinSelectInput['type']; script: { length: number }; weight?: number };
 type VinVout = { script: { length: number }; weight?: number };
 
diff --git a/packages/utxo-lib/src/coinselect/outputs/split.ts b/packages/utxo-lib/src/coinselect/outputs/split.ts
index 66bf3ba5fa3..a28c3164620 100644
--- a/packages/utxo-lib/src/coinselect/outputs/split.ts
+++ b/packages/utxo-lib/src/coinselect/outputs/split.ts
@@ -8,6 +8,7 @@ import {
     getFee,
     finalize,
     ZERO,
+    MINIMAL_COINBASE_CONFIRMATIONS,
 } from '../coinselectUtils';
 import {
     CoinSelectInput,
@@ -23,7 +24,7 @@ export function split(
     feeRate: number,
     options: CoinSelectOptions,
 ): CoinSelectResult {
-    const coinbase = options.coinbase || 100;
+    const coinbase = options.coinbase || MINIMAL_COINBASE_CONFIRMATIONS;
     const utxos = filterCoinbase(utxosOrig, coinbase);
 
     const fee = getFee(utxos, outputs, feeRate, options);
diff --git a/packages/utxo-lib/src/coinselect/tryconfirmed.ts b/packages/utxo-lib/src/coinselect/tryconfirmed.ts
index 69692729234..a7703a75929 100644
--- a/packages/utxo-lib/src/coinselect/tryconfirmed.ts
+++ b/packages/utxo-lib/src/coinselect/tryconfirmed.ts
@@ -1,4 +1,4 @@
-import { filterCoinbase } from './coinselectUtils';
+import { filterCoinbase, MINIMAL_COINBASE_CONFIRMATIONS } from './coinselectUtils';
 import { CoinSelectAlgorithm, CoinSelectOptions, CoinSelectInput } from '../types';
 
 function filterUtxos(utxos: CoinSelectInput[], minConfOwn: number, minConfOther: number) {
@@ -31,7 +31,7 @@ export function tryConfirmed(
 ): CoinSelectAlgorithm {
     const own = options.own || 1;
     const other = options.other || 6;
-    const coinbase = options.coinbase || 100;
+    const coinbase = options.coinbase || MINIMAL_COINBASE_CONFIRMATIONS;
 
     return (utxosO, outputs, feeRate, optionsIn) => {
         const utxos = filterCoinbase(utxosO, coinbase);