diff --git a/_nav.html b/_nav.html
index 5fa79aa..4c1d5a7 100644
--- a/_nav.html
+++ b/_nav.html
@@ -6,9 +6,13 @@
 
 	{{if $current == 'index'}}
 		<ul class="sub">
-			{{if $subcurrent == 'amortization'}}
-				<li class="current"><a>Amortissements</a></li>
-			{{/if}}
+			<li {{if $subcurrent == 'amort'}}class="current"{{/if}}><a href="index.html?amort=1">Amortissables</a></li>
+			<li {{if $subcurrent == 'no_amort'}}class="current"{{/if}}><a href="index.html?amort=0">Non amortissables</a></li>
 		</ul>
+		{{if $subsubcurrent == 'amortization'}}
+			<ul class="sub">
+				<li class="current"><a>Amortissements</a></li>
+			</ul>
+		{{/if}}
 	{{/if}}
 </nav>
diff --git a/add_duration.html b/add_duration.html
index 8963b69..fcaf510 100644
--- a/add_duration.html
+++ b/add_duration.html
@@ -9,7 +9,8 @@
 
 {{* Traiter l'envoi du formulaire *}}
 {{#form on="add"}}
-	{{* chercher la date d'achat de l'immobilisation *}}
+
+	{{* chercher la date d'acquisition de l'immobilisation *}}
 	{{:assign var="immo_id" value=$_GET.immo_id|intval}}
 	{{#select
 		trans.date as date_achat
@@ -21,35 +22,55 @@
 		}}
 	{{/select}}
 
-	{{* vérifier que la date d'acquisition est antérieure à la date de mise en service *}}
-	{{:assign date_debut=$_POST.date_mes|or:$ligne_immo.date_achat|parse_date}}
-	{{if $date_debut|strtotime < $ligne_immo.date_achat|strtotime}}
-		{{:assign dd=$date_debut|date_short}}
-		{{:assign da=$ligne_immo.date_achat|date_short}}
-		{{:error message="Erreur : la date de mise en service (%s) ne peut être antérieure à la date d'acquisition (%s)"|args:$dd:$da}}
+	{{if $_POST.no_amort}}
+		{{* ne pas amortir *}}
+		{{:assign duration=0}}
+		{{:assign date_debut=$ligne_immo.date_achat|parse_date}}
+		{{:assign noamort=true}}
+	{{else}}
+		{{* vérifier que la date d'acquisition est antérieure à la date de mise en service *}}
+		{{:assign date_debut=$_POST.date_mes|or:$ligne_immo.date_achat|parse_date}}
+		{{if $date_debut|strtotime < $ligne_immo.date_achat|strtotime}}
+			{{:assign dd=$date_debut|date_short}}
+			{{:assign da=$ligne_immo.date_achat|date_short}}
+			{{:error message="Erreur : la date de mise en service (%s) ne peut être antérieure à la date d'acquisition (%s)"|args:$dd:$da}}
+		{{/if}}
+		{{:assign duration=$_POST.duree|intval}}
+		{{:assign noamort=false}}
 	{{/if}}
-
-	{{:assign key=""|uuid}}
 	{{* enregistrer les infos de l'immobilisation *}}
+	{{:assign key=""|uuid}}
+
 	{{:save
 		key=$key
 		validate_schema="schema.json"
 		type="immo"
 		line=$immo_id
-		duration=$_POST.duree|intval
+		duration=$duration
 		date=$date_debut
+		noamort=$noamort
 	}}
 
-	{{:redirect force="index.html?ok=1&msg=durée"}}
+	{{:redirect force="index.html?ok=1&msg=infos"}}
+{{else}}
+	{{:form_errors}}
 {{/form}}
 
 {{* renseigner la date de mise en service et durée d'amortissement *}}
+{{if $_GET.amort == 0}}
+	{{:assign checked=1}}
+	{{:assign disabled=1}}
+{{else}}
+	{{:assign checked=0}}
+	{{:assign disabled=0}}
+{{/if}}
 <form method="post" action="">
-	<fieldset class="ajout_duree">
-		<legend>Renseigner informations amortissement</legend>
+	<fieldset id="infos_immo">
+		<legend></legend>
 		<dl>
-			{{:input type="date" name="date_mes" label="Date de mise en service" help="à renseigner uniquement si différente de la date d'acquisition"}}
-			{{:input type="number" name="duree" label="Durée d'amortissement" required=true default=1}}
+			{{:input id="no_amort" type="checkbox" value=1 name="no_amort" label="Ne pas amortir" default=$checked help="Cocher pour ne pas amortir" onclick="toggleInputs('infos_immo','f_no_amort_1')"}}
+			{{:input type="date" name="date_mes" label="Date de mise en service" disabled=$disabled help="à renseigner uniquement si différente de la date d'acquisition"}}
+			{{:input type="number" name="duree" label="Durée d'amortissement" required=true default=1 disabled=$disabled}}
 		</dl>
 	</fieldset>
 
@@ -59,5 +80,22 @@
 
 </form>
 
-{{:form_errors}}
+{{* activer/désactiver les champs de saisie *}}
+<script type="text/javascript">
+ function toggleInputs(idfs, idcb) {
+	 console.log("cb=" + idcb);
+	 const noamort = document.getElementById(idcb);
+	 const fs = document.getElementById(idfs);
+	 for (let field of fs.querySelectorAll("input")) {
+		 if (field == noamort) { continue }
+		 if (noamort.checked) {
+			 field.setAttribute("disabled","disabled");
+		 }
+		 else {
+			 field.removeAttribute("disabled");
+		 }
+	 }
+ }
+</script>
+
 {{:admin_footer}}
diff --git a/amortization.html b/amortization.html
index fe315d9..e2af8ff 100644
--- a/amortization.html
+++ b/amortization.html
@@ -3,7 +3,7 @@
 {{:admin_header title="Liste des amortissements" custom_css="./style.css" current="module_amortissement"}}
 
 {{* barre de navigation *}}
-{{:include file="_nav.html" current="index" subcurrent="amortization"}}
+{{:include file="_nav.html" current="index" subcurrent="immobilisation" subsubcurrent="amortization"}}
 
 {{if $_GET.ok}}
 	{{if $_GET.msg|match:"attach"}}
diff --git a/immobilisations.html b/immobilisations.html
new file mode 100644
index 0000000..c222fae
--- /dev/null
+++ b/immobilisations.html
@@ -0,0 +1,114 @@
+{{* -*- brindille -*- *}}
+
+{{* Liste des immobilisations amortissable ou à définir *}}
+
+<section class="immobilisation">
+	<h2 class="ruler">Liste des immobilisations</h2>
+
+	<table class="list">
+		<thead>
+			<tr>
+				<th>N°</th>
+				<th>Date</th>
+				<th>Libellé</th>
+				<th>Montant</th>
+				<th>Durée</th>
+				<th>N° compte</th>
+				<th>Compte</th>
+				<th>Projet</th>
+				<th class="actions"></th>
+			</tr>
+		</thead>
+		<tbody>
+
+			{{* lister les immobilisations *}}
+			{{:read file="./defaut.json" assign="config_json"}}
+			{{:assign config_defaut=$config_json|json_decode}}
+			{{:assign var="prefix_array" value=$config_defaut.prefixes|keys}}
+			{{:assign quote="'"}}
+			{{:assign condition="("}}
+			{{#foreach from=$prefix_array item="code"}}
+				{{:assign condition=$condition|cat:" account.code LIKE "|cat:$quote|cat:$code|cat:"%"|cat:$quote|cat:" OR "}}
+			{{/foreach}}
+			{{:assign condition=$condition|cat:"0)"}}
+
+			{{#select
+				trans.id as trans_id,
+				trans.label as trans_label,
+				trans.date as trans_date,
+				line.id as immo_id,
+				account.id as account_id,
+				account.code as account_code,
+				account.label as account_label,
+				line.debit AS debit,
+				project.label as project_label,
+				trans.id_year as trans_id_year
+				FROM acc_transactions AS trans
+				INNER JOIN acc_transactions_lines AS line ON line.id_transaction = trans.id
+				INNER JOIN acc_accounts AS account ON line.id_account = account.id
+				INNER JOIN acc_years AS years ON trans.id_year = years.id
+				LEFT JOIN acc_projects AS project ON line.id_project = project.id
+				WHERE !condition
+				ORDER BY trans.date DESC;
+				!condition=$condition
+			}}
+				{{:assign trans_url="%s/acc/transactions/details.php?id=%s"|args:$admin_url:$trans_id}}
+				{{:assign compte_url="%s/acc/accounts/journal.php?id=%s&year=%s"|args:$admin_url:$account_id:$trans_id_year}}
+				{{:assign duration=null}}
+				{{#load type="immo" where="$$.line = :line_id" :line_id=$immo_id|intval}}
+					{{:assign duration=$duration}}
+					{{if $noamort}}
+						{{:assign amortissable="non"}}
+					{{else}}
+						{{:assign amortissable="oui"}}
+					{{/if}}
+				{{else}}
+					{{:assign amortissable="nsp"}}
+				{{/load}}
+				{{if $amortissable == "non"}}
+					{{:continue}}
+				{{/if}}
+			<tr>
+				<td class="num"><a href={{$trans_url}}>#{{$trans_id}}</a></td>
+				<td>{{$trans_date|date_short}}</td>
+				<td>{{$trans_label}}</td>
+				<td class="money">{{"%f"|math:$debit|money}}</td>
+				<td class="num">{{if $duration != null}}{{$duration}}{{/if}}</td>
+				<td><a href={{$compte_url}}>{{$account_code}}</a></td>
+				<td>{{$account_label}}</td>
+				<td>{{$project_label}}</td>
+				<td class="actions">
+					{{if $duration == null}}
+					{{:linkbutton
+					label="Ajouter infos"
+					href="add_duration.html?immo_id=%s&amort=1"|args:$immo_id
+					shape="help"
+					target="_dialog"
+					}}
+					{{else}}
+					{{:linkbutton
+					label="Amortissements"
+					href="amortization.html?immo_id=%s"|args:$immo_id
+					shape="table"
+					}}
+					{{/if}}
+				</td>
+			</tr>
+			{{/select}}
+		</tbody>
+	</table>
+</section>
+
+<form method="post" action="">
+	<fieldset>
+		<legend>Ajouter une immobilisation</legend>
+		<p class="submit">
+			{{:linkbutton
+			label="Ajouter une immobilisation"
+			shape="plus"
+			href="add_asset.html"
+			target="_dialog"
+			}}
+		</p>
+	</fieldset>
+</form>
diff --git a/immobilisations_non.html b/immobilisations_non.html
new file mode 100644
index 0000000..de1365d
--- /dev/null
+++ b/immobilisations_non.html
@@ -0,0 +1,71 @@
+{{* -*- brindille -*- *}}
+
+{{* Liste des immobilisations non amortissable *}}
+
+<section class="immobilisation">
+	<h2 class="ruler">Immobilisations non amortissables</h2>
+
+	<table class="list">
+		<thead>
+			<tr>
+				<th>N°</th>
+				<th>Date</th>
+				<th>Libellé</th>
+				<th>Montant</th>
+				<th>N° compte</th>
+				<th>Compte</th>
+				<th>Projet</th>
+				<th class="actions"></th>
+			</tr>
+		</thead>
+		<tbody>
+
+			{{#load type="immo" where="$$.noamort = true"}}
+				{{:assign var="lines." value="'%s'"|args:$line}}
+			{{/load}}
+			{{:assign lines=$lines|implode:","}}
+			{{:assign lines="("|cat:$lines|cat:")"}}
+			{{:assign condition="line.id IN %s"|args:$lines}}
+			{{#select
+				trans.id as trans_id,
+				trans.label as trans_label,
+				trans.date as trans_date,
+				line.id as immo_id,
+				account.id as account_id,
+				account.code as account_code,
+				account.label as account_label,
+				line.debit AS debit,
+				project.label as project_label,
+				trans.id_year as trans_id_year
+				FROM acc_transactions AS trans
+				INNER JOIN acc_transactions_lines AS line ON line.id_transaction = trans.id
+				INNER JOIN acc_accounts AS account ON line.id_account = account.id
+				INNER JOIN acc_years AS years ON trans.id_year = years.id
+				LEFT JOIN acc_projects AS project ON line.id_project = project.id
+				WHERE !condition
+				ORDER BY trans.date DESC;
+				!condition=$condition
+			}}
+				{{:assign trans_url="%s/acc/transactions/details.php?id=%s"|args:$admin_url:$trans_id}}
+				{{:assign compte_url="%s/acc/accounts/journal.php?id=%s&year=%s"|args:$admin_url:$account_id:$trans_id_year}}
+			<tr>
+				<td class="num"><a href={{$trans_url}}>#{{$trans_id}}</a></td>
+				<td>{{$trans_date|date_short}}</td>
+				<td>{{$trans_label}}</td>
+				<td class="money">{{"%f"|math:$debit|money}}</td>
+				<td><a href={{$compte_url}}>{{$account_code}}</a></td>
+				<td>{{$account_label}}</td>
+				<td>{{$project_label}}</td>
+				<td class="actions">
+					{{:linkbutton
+						label="Ajouter infos"
+						href="add_duration.html?immo_id=%s&amort=0"|args:$immo_id
+						shape="help"
+						target="_dialog"
+					}}
+				</td>
+			</tr>
+			{{/select}}
+		</tbody>
+	</table>
+</section>
diff --git a/index.html b/index.html
index d34172f..e89cb2b 100644
--- a/index.html
+++ b/index.html
@@ -2,13 +2,19 @@
 {{:admin_header title="Gestion des amortissements" custom_css=$custom_css current="module_amortissement"}}
 
 {{* barre de navigation *}}
-{{:include file="_nav.html" current="index"}}
+{{if $_GET.amort == null || $_GET.amort}}
+	{{:assign amort="amort"}}
+{{else}}
+	{{:assign amort="no_amort"}}
+{{/if}}
+
+{{:include file="_nav.html" current="index" subcurrent="%s"|args:$amort}}
 
 {{if $_GET.ok}}
 	{{if $_GET.msg|match:"immobilisation"}}
 		{{:assign msg="Immobilisation enregistrée"}}
-	{{elseif $_GET.msg|match:"durée"}}
-		{{:assign msg="Durée enregistrée"}}
+	{{elseif $_GET.msg|match:"infos"}}
+		{{:assign msg="Informations enregistrées"}}
 	{{/if}}
 	<p class="block confirm">{{$msg}}</p>
 {{elseif $_GET.err}}
@@ -29,107 +35,9 @@
 	{{/select}}
 {{/load}}
 
-<section class="immobilisation">
-	<h2 class="ruler">Liste des immobilisations</h2>
-
-	<table class="list">
-		<thead>
-			<tr>
-				<th>N°</th>
-				<th>Date</th>
-				<th>Libellé</th>
-				<th>Montant</th>
-				<th>Durée</th>
-				<th>N° compte</th>
-				<th>Compte</th>
-				<th>Projet</th>
-				<th class="actions"></th>
-			</tr>
-		</thead>
-		<tbody>
-
-			{{* lister les immobilisations *}}
-			{{:read file="./defaut.json" assign="config_json"}}
-			{{:assign config_defaut=$config_json|json_decode}}
-			{{:assign var="prefix_array" value=$config_defaut.prefixes|keys}}
-			{{:assign quote="'"}}
-			{{:assign condition="("}}
-			{{#foreach from=$prefix_array item="code"}}
-				{{:assign condition=$condition|cat:" account.code LIKE "|cat:$quote|cat:$code|cat:"%"|cat:$quote|cat:" OR "}}
-			{{/foreach}}
-			{{:assign condition=$condition|cat:"0)"}}
-
-			{{#select
-				trans.id as trans_id,
-				trans.label as trans_label,
-				trans.date as trans_date,
-				line.id as immo_id,
-				account.id as account_id,
-				account.code as account_code,
-				account.label as account_label,
-				line.debit AS debit,
-				project.label as project_label,
-				trans.id_year as trans_id_year
-				FROM acc_transactions AS trans
-				INNER JOIN acc_transactions_lines AS line ON line.id_transaction = trans.id
-				INNER JOIN acc_accounts AS account ON line.id_account = account.id
-				INNER JOIN acc_years AS years ON trans.id_year = years.id
-				LEFT JOIN acc_projects AS project ON line.id_project = project.id
-				WHERE !condition
-				ORDER BY trans.date DESC;
-				!condition=$condition
-			}}
-				{{:assign trans_url="%s/acc/transactions/details.php?id=%s"|args:$admin_url:$trans_id}}
-				{{:assign compte_url="%s/acc/accounts/journal.php?id=%s&year=%s"|args:$admin_url:$account_id:$trans_id_year}}
-				{{#load type="immo" where="$$.line = :line_id" :line_id=$immo_id|intval}}
-					{{:assign duration=$duration}}
-				{{else}}
-					{{:assign duration=null}}
-				{{/load}}
-
-				<tr>
-					<td class="num"><a href={{$trans_url}}>#{{$trans_id}}</a></td>
-					<td>{{$trans_date|date_short}}</td>
-					<td>{{$trans_label}}</td>
-					<td class="money">{{"%f"|math:$debit|money}}</td>
-					<td class="num">{{if $duration != null}}{{$duration}}{{/if}}</td>
-					<td><a href={{$compte_url}}>{{$account_code}}</a></td>
-					<td>{{$account_label}}</td>
-					<td>{{$project_label}}</td>
-					<td class="actions">
-						{{if $duration == null}}
-							{{:linkbutton
-								label="Ajouter infos"
-								href="add_duration.html?immo_id=%s"|args:$immo_id
-								shape="help"
-								target="_dialog"
-							}}
-						{{else}}
-							{{:linkbutton
-								label="Amortissements"
-								href="amortization.html?immo_id=%s"|args:$immo_id
-								shape="table"
-							}}
-						{{/if}}
-					</td>
-				</tr>
-			{{/select}}
-		</tbody>
-	</table>
-</section>
-
-<form method="post" action="">
-	<fieldset>
-		<legend>Ajouter une immobilisation</legend>
-		<p class="submit">
-			{{:linkbutton
-				label="Ajouter une immobilisation"
-				shape="plus"
-				href="add_asset.html"
-				target="_dialog"
-			}}
-		</p>
-	</fieldset>
-</form>
-
+{{if $amort == "amort"}}
+	{{:include file="./immobilisations.html"}}
+{{else}}
+	{{:include file="./immobilisations_non.html"}}
+{{/if}}
 {{:admin_footer}}
diff --git a/schema.json b/schema.json
index cd6a698..b2d16e2 100644
--- a/schema.json
+++ b/schema.json
@@ -18,6 +18,9 @@
 			"description" : "date de mise en service de l'immobilisation",
 			"type" : ["string", "null"],
 			"format" : "date"
+		},
+		"noamort" : {
+			"type" : ["null", "boolean"]
 		}
 	},
 	"required": ["type", "line", "duration", "date"]