diff --git a/src/forms/BoundNumberField.test.tsx b/src/forms/BoundNumberField.test.tsx
index 88fc361f5..38ddc5f45 100644
--- a/src/forms/BoundNumberField.test.tsx
+++ b/src/forms/BoundNumberField.test.tsx
@@ -57,6 +57,14 @@ describe("BoundNumberField", () => {
     expect(r.royalties).toHaveValue("$1.00");
   });
 
+  it("drops the 'in mills' suffix from labels", async () => {
+    const author = createObjectState(formConfig, { royaltiesInMills: 1_00 });
+    const r = await render(<BoundNumberField field={author.royaltiesInMills} />);
+    expect(r.royalties_label).toHaveTextContent("Royalties");
+    expect(r.royalties_label).not.toHaveTextContent("Cents");
+    expect(r.royalties).toHaveValue("$0.100");
+  });
+
   it("retains 0 value", async () => {
     const author = createObjectState(formConfig, { royaltiesInCents: 1_00 });
     const r = await render(<BoundNumberField field={author.royaltiesInCents} />);
@@ -117,4 +125,5 @@ describe("BoundNumberField", () => {
 const formConfig: ObjectConfig<AuthorInput> = {
   heightInInches: { type: "value", rules: [required] },
   royaltiesInCents: { type: "value" },
+  royaltiesInMills: { type: "value" },
 };
diff --git a/src/forms/BoundNumberField.tsx b/src/forms/BoundNumberField.tsx
index 267be6e4c..55654de91 100644
--- a/src/forms/BoundNumberField.tsx
+++ b/src/forms/BoundNumberField.tsx
@@ -18,8 +18,8 @@ export function BoundNumberField(props: BoundNumberFieldProps) {
     field,
     readOnly,
     onChange = (value) => field.set(value),
-    label = defaultLabel(field.key.replace(/InCents$/, "")),
-    type = field.key.endsWith("InCents") ? "cents" : undefined,
+    label = defaultLabel(field.key.replace(/(InCents|InMills)$/, "")),
+    type = field.key.endsWith("InCents") ? "cents" : field.key.endsWith("InMills") ? "mills" : undefined,
     onFocus,
     onBlur,
     onEnter,
diff --git a/src/forms/formStateDomain.ts b/src/forms/formStateDomain.ts
index 00bea4279..e74856bc4 100644
--- a/src/forms/formStateDomain.ts
+++ b/src/forms/formStateDomain.ts
@@ -26,6 +26,7 @@ export interface AuthorInput {
   birthday?: Date | null;
   heightInInches?: number | null;
   royaltiesInCents?: number | null;
+  royaltiesInMills?: number | null;
   books?: BookInput[] | null;
   address?: AuthorAddress | null;
   favoriteSport?: string | null;
diff --git a/src/inputs/NumberField.stories.tsx b/src/inputs/NumberField.stories.tsx
index 07237f211..4a165bdda 100644
--- a/src/inputs/NumberField.stories.tsx
+++ b/src/inputs/NumberField.stories.tsx
@@ -45,6 +45,7 @@ export function NumberFieldStyles() {
       <div css={Css.df.fdc.gap2.$}>
         <h1 css={Css.lg.$}>Unit Types</h1>
         <TestNumberField label="Percent" type="percent" value={12.55} numFractionDigits={2} truncate />
+        <TestNumberField label="Mills" type="mills" value={1000} />
         <TestNumberField label="Cents" type="cents" value={1000} />
         <TestNumberField label="Dollars" type="dollars" value={1000} />
         <TestNumberField label="Margin" type="basisPoints" value={1275} />
@@ -80,6 +81,7 @@ export function NumberFieldReadOnly() {
         <TextField label="First Name" value="first" onChange={() => {}} readOnly={true} />
         <TestNumberField label="Name" value={100} readOnly={true} />
         <TestNumberField label="Name" value={100} labelStyle="hidden" readOnly={true} />
+        <TestNumberField label="Name" value={100} readOnly={true} type="mills" />
         <TestNumberField label="Name" value={100} readOnly={true} type="cents" />
         <TestNumberField label="Name" value={100} readOnly={true} type="percent" />
       </div>
diff --git a/src/inputs/NumberField.test.tsx b/src/inputs/NumberField.test.tsx
index 7d66a475a..c0481cbab 100644
--- a/src/inputs/NumberField.test.tsx
+++ b/src/inputs/NumberField.test.tsx
@@ -60,6 +60,14 @@ describe("NumberFieldTest", () => {
     expect(onChange).toBeCalledTimes(2); // change and blur
   });
 
+  it("can set mills as dollars", async () => {
+    const r = await render(<TestNumberField label="Cost" type="mills" value={1200} />);
+    expect(r.cost).toHaveValue("$1.200");
+    type(r.cost, "14");
+    expect(r.cost).toHaveValue("$14.000");
+    expect(lastSet).toEqual(14000);
+  });
+
   it("can set cents as dollars", async () => {
     const r = await render(<TestNumberField label="Cost" type="cents" value={1200} />);
     expect(r.cost).toHaveValue("$12.00");
@@ -92,6 +100,14 @@ describe("NumberFieldTest", () => {
     expect(onChange).toBeCalledTimes(2); // change and blur
   });
 
+  it("can set mills as mills", async () => {
+    const r = await render(<TestNumberField label="Cost" type="mills" value={12000} />);
+    expect(r.cost).toHaveValue("$12.000");
+    type(r.cost, ".145");
+    expect(r.cost).toHaveValue("$0.145");
+    expect(lastSet).toEqual(145);
+  });
+
   it("can set cents as cents", async () => {
     const r = await render(<TestNumberField label="Cost" type="cents" value={1200} />);
     expect(r.cost).toHaveValue("$12.00");
@@ -153,6 +169,7 @@ describe("NumberFieldTest", () => {
     const r = await render(
       <>
         <TestNumberField label="Days" type="days" value={123} displayDirection />
+        <TestNumberField label="Mills" type="mills" value={456} displayDirection />
         <TestNumberField label="Cents" type="cents" value={456} displayDirection />
         <TestNumberField label="Basis Points" type="basisPoints" value={789} displayDirection />
         <TestNumberField label="Percent" type="percent" value={123} displayDirection />
@@ -160,6 +177,7 @@ describe("NumberFieldTest", () => {
       </>,
     );
     expect(r.days).toHaveValue("+123 days");
+    expect(r.mills).toHaveValue("+$0.456");
     expect(r.cents).toHaveValue("+$4.56");
     expect(r.basisPoints).toHaveValue("+7.89%");
     expect(r.percent).toHaveValue("+123%");
diff --git a/src/inputs/NumberField.tsx b/src/inputs/NumberField.tsx
index efe8fc962..a5d4e8d7e 100644
--- a/src/inputs/NumberField.tsx
+++ b/src/inputs/NumberField.tsx
@@ -8,7 +8,7 @@ import { Css, Xss } from "src/Css";
 import { maybeCall } from "src/utils";
 import { TextFieldBase } from "./TextFieldBase";
 
-export type NumberFieldType = "cents" | "dollars" | "percent" | "basisPoints" | "days";
+export type NumberFieldType = "cents" | "dollars" | "percent" | "basisPoints" | "days" | "mills";
 
 // exported for testing purposes
 export interface NumberFieldProps extends Pick<PresentationFieldProps, "labelStyle" | "fullWidth"> {
@@ -85,7 +85,9 @@ export function NumberField(props: NumberFieldProps) {
 
   const isDisabled = !!disabled;
   const isReadOnly = !!readOnly;
-  const factor = type === "percent" || type === "cents" ? 100 : type === "basisPoints" ? 10_000 : 1;
+  const factor =
+    type === "percent" ? 100 : type === "cents" ? 100 : type === "mills" ? 1_000 : type === "basisPoints" ? 10_000 : 1;
+
   const signDisplay = displayDirection ? "always" : "auto";
   const defaultFormatOptions: Intl.NumberFormatOptions = useMemo(
     () => ({
@@ -111,6 +113,8 @@ export function NumberField(props: NumberFieldProps) {
         ? { style: "percent", minimumFractionDigits: 2 }
         : type === "cents"
         ? { style: "currency", currency: "USD", minimumFractionDigits: 2 }
+        : type === "mills"
+        ? { style: "currency", currency: "USD", minimumFractionDigits: 3 }
         : type === "dollars"
         ? { style: "currency", currency: "USD", minimumFractionDigits: numFractionDigits ?? 2 }
         : type === "days"