diff --git a/new/stack.c b/new/stack.c
index fa28e59..eaa7a7e 100644
--- a/new/stack.c
+++ b/new/stack.c
@@ -13,6 +13,7 @@ struct stack {
 	uintmax_t cap;
 	int vertical;
 	uintptr_t parent;
+	int padded;
 };
 
 #define S(c) ((stack *) (c))
@@ -58,16 +59,22 @@ static uiSize stackPreferredSize(uiControl *c, uiSizing *d)
 	intmax_t maxswid, maxsht;
 	uintmax_t i;
 	uiSize size, preferred;
+	uiSizingComm *dd = (uiSizingComm *) d;
 
 	size.width = 0;
 	size.height = 0;
 	if (s->len == 0)
 		return size;
 
-	// 1) add in padding
-	// TODO padding
+	// 0) get this Stack's padding
 	xpadding = 0;
 	ypadding = 0;
+	if (s->padded) {
+		xpadding = dd->xPadding;
+		ypadding = dd->yPadding;
+	}
+
+	// 1) initialize the desired rect with the needed padding
 	if (s->vertical)
 		size.height = (s->len - 1) * ypadding;
 	else
@@ -117,13 +124,18 @@ static void stackResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, in
 	intmax_t stretchywid, stretchyht;
 	uintmax_t i;
 	uiSize preferred;
+	uiSizingComm *dd = (uiSizingComm *) d;
 
 	if (s->len == 0)
 		return;
 
-	// TODO padding
+	// -1) get this Stack's padding
 	xpadding = 0;
 	ypadding = 0;
+	if (s->padded) {
+		xpadding = dd->xPadding;
+		ypadding = dd->yPadding;
+	}
 
 	// 0) inset the available rect by the needed padding
 	if (s->vertical)
@@ -220,3 +232,13 @@ void uiStackAdd(uiControl *st, uiControl *c, int stretchy)
 	s->len++;
 	updateParent(s->parent);
 }
+
+// TODO get padded
+
+void uiStackSetPadded(uiControl *st, int padded)
+{
+	stack *s = S(st);
+
+	s->padded = padded;
+	updateParent(s->parent);
+}
diff --git a/new/test.c b/new/test.c
index f8e7c40..c4a373e 100644
--- a/new/test.c
+++ b/new/test.c
@@ -66,12 +66,17 @@ static void setCheckboxText(uiControl *b, void *data)
 }
 
 uiWindow *w;
-uiControl *stacks[5];
+#define nStacks 5
+uiControl *stacks[nStacks];
 uiControl *spaced;
 
 static void setSpaced(int spaced)
 {
+	int i;
+
 	uiWindowSetMargined(w, spaced);
+	for (i = 0; i < nStacks; i++)
+		uiStackSetPadded(stacks[i], spaced);
 }
 
 static void toggleSpaced(uiControl *c, void *data)
diff --git a/new/ui.h b/new/ui.h
index 0c32fba..8387dda 100644
--- a/new/ui.h
+++ b/new/ui.h
@@ -42,6 +42,8 @@ void uiButtonOnClicked(uiControl *, void (*)(uiControl *, void *), void *);
 uiControl *uiNewHorizontalStack(void);
 uiControl *uiNewVerticalStack(void);
 void uiStackAdd(uiControl *, uiControl *, int);
+// TODO get padded
+void uiStackSetPadded(uiControl *, int);
 
 uiControl *uiNewEntry(void);
 char *uiEntryText(uiControl *);
diff --git a/new/uipriv.h b/new/uipriv.h
index ebb1be4..26d06ba 100644
--- a/new/uipriv.h
+++ b/new/uipriv.h
@@ -4,16 +4,22 @@
 
 typedef struct uiSize uiSize;
 typedef struct uiSizing uiSizing;
+typedef struct uiSizingComm uiSizingComm;
 
 struct uiSize {
 	intmax_t width;
 	intmax_t height;
 };
 
+// TODO this is a bit iffy; clean it up
 #define uiSizingCommon \
 	intmax_t xPadding; \
 	intmax_t yPadding;
 
+struct uiSizingComm {
+	uiSizingCommon
+};
+
 struct uiControl {
 	void (*destroy)(uiControl *);
 	uintptr_t (*handle)(uiControl *);