diff --git a/client/src/modules/sales/SalesDetailPage.tsx b/client/src/modules/sales/SalesDetailPage.tsx
index ccf0060..2c895b9 100644
--- a/client/src/modules/sales/SalesDetailPage.tsx
+++ b/client/src/modules/sales/SalesDetailPage.tsx
@@ -162,6 +162,26 @@ export function SalesDetailPage({ entity }: { entity: SalesDocumentEntity }) {
           <div className="mt-2 text-base font-bold text-text">${activeDocument.subtotal.toFixed(2)}</div>
         </article>
       </section>
+      <section className="grid gap-3 xl:grid-cols-4">
+        <article className="rounded-[24px] border border-line/70 bg-surface/90 px-3 py-3 shadow-panel">
+          <p className="text-xs font-semibold uppercase tracking-[0.18em] text-muted">Discount</p>
+          <div className="mt-2 text-base font-bold text-text">-${activeDocument.discountAmount.toFixed(2)}</div>
+          <div className="mt-1 text-xs text-muted">{activeDocument.discountPercent.toFixed(2)}%</div>
+        </article>
+        <article className="rounded-[24px] border border-line/70 bg-surface/90 px-3 py-3 shadow-panel">
+          <p className="text-xs font-semibold uppercase tracking-[0.18em] text-muted">Tax</p>
+          <div className="mt-2 text-base font-bold text-text">${activeDocument.taxAmount.toFixed(2)}</div>
+          <div className="mt-1 text-xs text-muted">{activeDocument.taxPercent.toFixed(2)}%</div>
+        </article>
+        <article className="rounded-[24px] border border-line/70 bg-surface/90 px-3 py-3 shadow-panel">
+          <p className="text-xs font-semibold uppercase tracking-[0.18em] text-muted">Freight</p>
+          <div className="mt-2 text-base font-bold text-text">${activeDocument.freightAmount.toFixed(2)}</div>
+        </article>
+        <article className="rounded-[24px] border border-line/70 bg-surface/90 px-3 py-3 shadow-panel">
+          <p className="text-xs font-semibold uppercase tracking-[0.18em] text-muted">Total</p>
+          <div className="mt-2 text-base font-bold text-text">${activeDocument.total.toFixed(2)}</div>
+        </article>
+      </section>
       <div className="grid gap-3 xl:grid-cols-[minmax(0,1.05fr)_minmax(320px,0.95fr)]">
         <article className="rounded-[28px] border border-line/70 bg-surface/90 p-4 shadow-panel 2xl:p-5">
           <p className="text-xs font-semibold uppercase tracking-[0.24em] text-muted">Customer</p>
diff --git a/client/src/modules/sales/SalesFormPage.tsx b/client/src/modules/sales/SalesFormPage.tsx
index 803aa69..f5b9336 100644
--- a/client/src/modules/sales/SalesFormPage.tsx
+++ b/client/src/modules/sales/SalesFormPage.tsx
@@ -24,6 +24,12 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
   const [activeLinePicker, setActiveLinePicker] = useState<number | null>(null);
   const [isSaving, setIsSaving] = useState(false);
 
+  const subtotal = form.lines.reduce((sum, line) => sum + line.quantity * line.unitPrice, 0);
+  const discountAmount = subtotal * (form.discountPercent / 100);
+  const taxableSubtotal = subtotal - discountAmount;
+  const taxAmount = taxableSubtotal * (form.taxPercent / 100);
+  const total = taxableSubtotal + taxAmount + form.freightAmount;
+
   useEffect(() => {
     if (!token) {
       return;
@@ -46,6 +52,9 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
           status: document.status,
           issueDate: document.issueDate,
           expiresAt: entity === "quote" ? document.expiresAt : null,
+          discountPercent: document.discountPercent,
+          taxPercent: document.taxPercent,
+          freightAmount: document.freightAmount,
           notes: document.notes,
           lines: document.lines.map((line) => ({
             itemId: line.itemId,
@@ -74,6 +83,10 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
     return customers.find((customer) => customer.id === customerId)?.name ?? "";
   }
 
+  function getSelectedCustomer(customerId: string) {
+    return customers.find((customer) => customer.id === customerId) ?? null;
+  }
+
   function updateLine(index: number, nextLine: SalesLineInput) {
     setForm((current: SalesDocumentInput) => ({
       ...current,
@@ -201,6 +214,7 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
                         onMouseDown={(event) => {
                           event.preventDefault();
                           updateField("customerId", customer.id);
+                          updateField("discountPercent", customer.resellerDiscountPercent);
                           setCustomerSearchTerm(customer.name);
                           setCustomerPickerOpen(false);
                         }}
@@ -226,6 +240,11 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
             <div className="mt-2 min-h-5 text-xs text-muted">
               {form.customerId ? getSelectedCustomerName(form.customerId) : "No customer selected"}
             </div>
+            {form.customerId ? (
+              <div className="mt-1 text-xs text-muted">
+                Default reseller discount: {getSelectedCustomer(form.customerId)?.resellerDiscountPercent.toFixed(2) ?? "0.00"}%
+              </div>
+            ) : null}
           </label>
           <label className="block">
             <span className="mb-2 block text-sm font-semibold text-text">Status</span>
@@ -271,6 +290,43 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
             className="w-full rounded-3xl border border-line/70 bg-page px-2 py-2 text-text outline-none transition focus:border-brand"
           />
         </label>
+        <div className="grid gap-3 xl:grid-cols-3">
+          <label className="block">
+            <span className="mb-2 block text-sm font-semibold text-text">Discount %</span>
+            <input
+              type="number"
+              min={0}
+              max={100}
+              step={0.01}
+              value={form.discountPercent}
+              onChange={(event) => updateField("discountPercent", Number(event.target.value) || 0)}
+              className="w-full rounded-2xl border border-line/70 bg-page px-2 py-2 text-text outline-none transition focus:border-brand"
+            />
+          </label>
+          <label className="block">
+            <span className="mb-2 block text-sm font-semibold text-text">Tax %</span>
+            <input
+              type="number"
+              min={0}
+              max={100}
+              step={0.01}
+              value={form.taxPercent}
+              onChange={(event) => updateField("taxPercent", Number(event.target.value) || 0)}
+              className="w-full rounded-2xl border border-line/70 bg-page px-2 py-2 text-text outline-none transition focus:border-brand"
+            />
+          </label>
+          <label className="block">
+            <span className="mb-2 block text-sm font-semibold text-text">Freight</span>
+            <input
+              type="number"
+              min={0}
+              step={0.01}
+              value={form.freightAmount}
+              onChange={(event) => updateField("freightAmount", Number(event.target.value) || 0)}
+              className="w-full rounded-2xl border border-line/70 bg-page px-2 py-2 text-text outline-none transition focus:border-brand"
+            />
+          </label>
+        </div>
       </section>
       <section className="rounded-[28px] border border-line/70 bg-surface/90 p-4 shadow-panel 2xl:p-5">
         <div className="flex flex-col gap-3 lg:flex-row lg:items-start lg:justify-between">
@@ -290,7 +346,7 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
           <div className="mt-5 space-y-4">
             {form.lines.map((line: SalesLineInput, index: number) => (
               <div key={index} className="rounded-3xl border border-line/70 bg-page/60 p-3">
-                <div className="grid gap-3 xl:grid-cols-[1.25fr_1.4fr_0.55fr_0.55fr_0.75fr_auto]">
+                <div className="grid gap-3 xl:grid-cols-[1.15fr_1.25fr_0.5fr_0.55fr_0.7fr_0.75fr_auto]">
                   <label className="block">
                     <span className="mb-2 block text-xs font-semibold uppercase tracking-[0.16em] text-muted">SKU</span>
                     <div className="relative">
@@ -357,6 +413,11 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
                     <span className="mb-2 block text-xs font-semibold uppercase tracking-[0.16em] text-muted">Unit Price</span>
                     <input type="number" min={0} step={0.01} value={line.unitPrice} onChange={(event) => updateLine(index, { ...line, unitPrice: Number(event.target.value) })} className="w-full rounded-2xl border border-line/70 bg-surface px-2 py-2 text-text outline-none transition focus:border-brand" />
                   </label>
+                  <div className="flex items-end">
+                    <div className="w-full rounded-2xl border border-line/70 bg-surface px-2 py-2 text-sm text-text">
+                      ${(line.quantity * line.unitPrice).toFixed(2)}
+                    </div>
+                  </div>
                   <div className="flex items-end">
                     <button type="button" onClick={() => removeLine(index)} className="rounded-2xl border border-rose-400/40 px-2 py-2 text-sm font-semibold text-rose-700 dark:text-rose-300">
                       Remove
@@ -367,6 +428,24 @@ export function SalesFormPage({ entity, mode }: { entity: SalesDocumentEntity; m
             ))}
           </div>
         )}
+        <div className="mt-5 grid gap-3 md:grid-cols-2 xl:grid-cols-4">
+          <div className="rounded-2xl border border-line/70 bg-page/60 px-2 py-2 text-sm">
+            <div className="text-xs font-semibold uppercase tracking-[0.16em] text-muted">Subtotal</div>
+            <div className="mt-1 font-semibold text-text">${subtotal.toFixed(2)}</div>
+          </div>
+          <div className="rounded-2xl border border-line/70 bg-page/60 px-2 py-2 text-sm">
+            <div className="text-xs font-semibold uppercase tracking-[0.16em] text-muted">Discount</div>
+            <div className="mt-1 font-semibold text-text">-${discountAmount.toFixed(2)}</div>
+          </div>
+          <div className="rounded-2xl border border-line/70 bg-page/60 px-2 py-2 text-sm">
+            <div className="text-xs font-semibold uppercase tracking-[0.16em] text-muted">Tax + Freight</div>
+            <div className="mt-1 font-semibold text-text">${(taxAmount + form.freightAmount).toFixed(2)}</div>
+          </div>
+          <div className="rounded-2xl border border-line/70 bg-page/60 px-2 py-2 text-sm">
+            <div className="text-xs font-semibold uppercase tracking-[0.16em] text-muted">Total</div>
+            <div className="mt-1 font-semibold text-text">${total.toFixed(2)}</div>
+          </div>
+        </div>
         <div className="mt-6 flex flex-col gap-3 rounded-2xl border border-line/70 bg-page/70 px-2 py-2 sm:flex-row sm:items-center sm:justify-between">
           <span className="min-w-0 text-sm text-muted">{status}</span>
           <button type="submit" disabled={isSaving} className="rounded-2xl bg-brand px-2 py-2 text-sm font-semibold text-white disabled:cursor-not-allowed disabled:opacity-60">
diff --git a/client/src/modules/sales/SalesListPage.tsx b/client/src/modules/sales/SalesListPage.tsx
index 84623d4..3158538 100644
--- a/client/src/modules/sales/SalesListPage.tsx
+++ b/client/src/modules/sales/SalesListPage.tsx
@@ -111,7 +111,7 @@ export function SalesListPage({ entity }: { entity: SalesDocumentEntity }) {
                     <SalesStatusBadge status={document.status} />
                   </td>
                   <td className="px-2 py-2 text-muted">{new Date(document.issueDate).toLocaleDateString()}</td>
-                  <td className="px-2 py-2 text-muted">${document.subtotal.toFixed(2)}</td>
+                  <td className="px-2 py-2 text-muted">${document.total.toFixed(2)}</td>
                   <td className="px-2 py-2 text-muted">{document.lineCount}</td>
                 </tr>
               ))}
diff --git a/client/src/modules/sales/config.ts b/client/src/modules/sales/config.ts
index 805c003..e154bb9 100644
--- a/client/src/modules/sales/config.ts
+++ b/client/src/modules/sales/config.ts
@@ -54,6 +54,9 @@ export const emptySalesDocumentInput: SalesDocumentInput = {
   status: "DRAFT",
   issueDate: new Date().toISOString(),
   expiresAt: null,
+  discountPercent: 0,
+  taxPercent: 0,
+  freightAmount: 0,
   notes: "",
   lines: [],
 };
diff --git a/server/prisma/migrations/20260315010000_sales_totals_and_terms/migration.sql b/server/prisma/migrations/20260315010000_sales_totals_and_terms/migration.sql
new file mode 100644
index 0000000..d3516ef
--- /dev/null
+++ b/server/prisma/migrations/20260315010000_sales_totals_and_terms/migration.sql
@@ -0,0 +1,7 @@
+ALTER TABLE "SalesQuote" ADD COLUMN "discountPercent" REAL NOT NULL DEFAULT 0;
+ALTER TABLE "SalesQuote" ADD COLUMN "taxPercent" REAL NOT NULL DEFAULT 0;
+ALTER TABLE "SalesQuote" ADD COLUMN "freightAmount" REAL NOT NULL DEFAULT 0;
+
+ALTER TABLE "SalesOrder" ADD COLUMN "discountPercent" REAL NOT NULL DEFAULT 0;
+ALTER TABLE "SalesOrder" ADD COLUMN "taxPercent" REAL NOT NULL DEFAULT 0;
+ALTER TABLE "SalesOrder" ADD COLUMN "freightAmount" REAL NOT NULL DEFAULT 0;
diff --git a/server/prisma/schema.prisma b/server/prisma/schema.prisma
index 4932513..e51239d 100644
--- a/server/prisma/schema.prisma
+++ b/server/prisma/schema.prisma
@@ -290,6 +290,9 @@ model SalesQuote {
   status         String
   issueDate      DateTime
   expiresAt      DateTime?
+  discountPercent Float   @default(0)
+  taxPercent      Float   @default(0)
+  freightAmount   Float   @default(0)
   notes          String
   createdAt      DateTime @default(now())
   updatedAt      DateTime @updatedAt
@@ -320,6 +323,9 @@ model SalesOrder {
   customerId     String
   status         String
   issueDate      DateTime
+  discountPercent Float   @default(0)
+  taxPercent      Float   @default(0)
+  freightAmount   Float   @default(0)
   notes          String
   createdAt      DateTime @default(now())
   updatedAt      DateTime @updatedAt
diff --git a/server/src/modules/sales/router.ts b/server/src/modules/sales/router.ts
index e574461..5686d0f 100644
--- a/server/src/modules/sales/router.ts
+++ b/server/src/modules/sales/router.ts
@@ -30,6 +30,9 @@ const quoteSchema = z.object({
   status: z.enum(salesDocumentStatuses),
   issueDate: z.string().datetime(),
   expiresAt: z.string().datetime().nullable(),
+  discountPercent: z.number().min(0).max(100),
+  taxPercent: z.number().min(0).max(100),
+  freightAmount: z.number().nonnegative(),
   notes: z.string(),
   lines: z.array(salesLineSchema),
 });
@@ -38,6 +41,9 @@ const orderSchema = z.object({
   customerId: z.string().trim().min(1),
   status: z.enum(salesDocumentStatuses),
   issueDate: z.string().datetime(),
+  discountPercent: z.number().min(0).max(100),
+  taxPercent: z.number().min(0).max(100),
+  freightAmount: z.number().nonnegative(),
   notes: z.string(),
   lines: z.array(salesLineSchema),
 });
diff --git a/server/src/modules/sales/service.ts b/server/src/modules/sales/service.ts
index a731a47..bd46879 100644
--- a/server/src/modules/sales/service.ts
+++ b/server/src/modules/sales/service.ts
@@ -30,6 +30,9 @@ type SalesDocumentRecord = {
   status: string;
   issueDate: Date;
   expiresAt?: Date | null;
+  discountPercent: number;
+  taxPercent: number;
+  freightAmount: number;
   notes: string;
   createdAt: Date;
   updatedAt: Date;
@@ -60,6 +63,31 @@ const documentConfig = {
   },
 } as const;
 
+function roundMoney(value: number) {
+  return Math.round(value * 100) / 100;
+}
+
+function calculateTotals(subtotal: number, discountPercent: number, taxPercent: number, freightAmount: number) {
+  const normalizedSubtotal = roundMoney(subtotal);
+  const normalizedDiscountPercent = Number.isFinite(discountPercent) ? discountPercent : 0;
+  const normalizedTaxPercent = Number.isFinite(taxPercent) ? taxPercent : 0;
+  const normalizedFreight = roundMoney(Number.isFinite(freightAmount) ? freightAmount : 0);
+  const discountAmount = roundMoney(normalizedSubtotal * (normalizedDiscountPercent / 100));
+  const taxableSubtotal = roundMoney(normalizedSubtotal - discountAmount);
+  const taxAmount = roundMoney(taxableSubtotal * (normalizedTaxPercent / 100));
+  const total = roundMoney(taxableSubtotal + taxAmount + normalizedFreight);
+
+  return {
+    subtotal: normalizedSubtotal,
+    discountPercent: normalizedDiscountPercent,
+    discountAmount,
+    taxPercent: normalizedTaxPercent,
+    taxAmount,
+    freightAmount: normalizedFreight,
+    total,
+  };
+}
+
 function normalizeLines(lines: SalesLineInput[]) {
   return lines
     .map((line, index) => ({
@@ -117,6 +145,12 @@ function mapDocument(record: SalesDocumentRecord): SalesDocumentDetailDto {
       lineTotal: line.quantity * line.unitPrice,
       position: line.position,
     }));
+  const totals = calculateTotals(
+    lines.reduce((sum, line) => sum + line.lineTotal, 0),
+    record.discountPercent,
+    record.taxPercent,
+    record.freightAmount
+  );
 
   return {
     id: record.id,
@@ -125,7 +159,13 @@ function mapDocument(record: SalesDocumentRecord): SalesDocumentDetailDto {
     customerName: record.customer.name,
     customerEmail: record.customer.email,
     status: record.status as SalesDocumentStatus,
-    subtotal: lines.reduce((sum, line) => sum + line.lineTotal, 0),
+    subtotal: totals.subtotal,
+    discountPercent: totals.discountPercent,
+    discountAmount: totals.discountAmount,
+    taxPercent: totals.taxPercent,
+    taxAmount: totals.taxAmount,
+    freightAmount: totals.freightAmount,
+    total: totals.total,
     issueDate: record.issueDate.toISOString(),
     expiresAt: "expiresAt" in record && record.expiresAt ? record.expiresAt.toISOString() : null,
     notes: record.notes,
@@ -198,6 +238,7 @@ export async function listSalesCustomerOptions(): Promise<SalesCustomerOptionDto
       id: true,
       name: true,
       email: true,
+      resellerDiscountPercent: true,
     },
     orderBy: [{ name: "asc" }],
   });
@@ -232,6 +273,12 @@ export async function listSalesDocuments(type: SalesDocumentType, filters: { q?:
       customerName: detail.customerName,
       status: detail.status,
       subtotal: detail.subtotal,
+      discountPercent: detail.discountPercent,
+      discountAmount: detail.discountAmount,
+      taxPercent: detail.taxPercent,
+      taxAmount: detail.taxAmount,
+      freightAmount: detail.freightAmount,
+      total: detail.total,
       issueDate: detail.issueDate,
       updatedAt: detail.updatedAt,
       lineCount: detail.lineCount,
@@ -274,6 +321,9 @@ export async function createSalesDocument(type: SalesDocumentType, payload: Sale
       status: payload.status,
       issueDate: new Date(payload.issueDate),
       ...(type === "QUOTE" ? { expiresAt: payload.expiresAt ? new Date(payload.expiresAt) : null } : {}),
+      discountPercent: payload.discountPercent,
+      taxPercent: payload.taxPercent,
+      freightAmount: payload.freightAmount,
       notes: payload.notes,
       lines: {
         create: validatedLines.lines,
@@ -317,6 +367,9 @@ export async function updateSalesDocument(type: SalesDocumentType, documentId: s
       status: payload.status,
       issueDate: new Date(payload.issueDate),
       ...(type === "QUOTE" ? { expiresAt: payload.expiresAt ? new Date(payload.expiresAt) : null } : {}),
+      discountPercent: payload.discountPercent,
+      taxPercent: payload.taxPercent,
+      freightAmount: payload.freightAmount,
       notes: payload.notes,
       lines: {
         deleteMany: {},
@@ -369,6 +422,9 @@ export async function convertQuoteToSalesOrder(quoteId: string) {
       customerId: mappedQuote.customerId,
       status: "DRAFT",
       issueDate: new Date(),
+      discountPercent: mappedQuote.discountPercent,
+      taxPercent: mappedQuote.taxPercent,
+      freightAmount: mappedQuote.freightAmount,
       notes: mappedQuote.notes ? `Converted from ${mappedQuote.documentNumber}\n\n${mappedQuote.notes}` : `Converted from ${mappedQuote.documentNumber}`,
       lines: {
         create: mappedQuote.lines.map((line) => ({
diff --git a/shared/src/sales/types.ts b/shared/src/sales/types.ts
index 3e44493..046c836 100644
--- a/shared/src/sales/types.ts
+++ b/shared/src/sales/types.ts
@@ -9,6 +9,7 @@ export interface SalesCustomerOptionDto {
   id: string;
   name: string;
   email: string;
+  resellerDiscountPercent: number;
 }
 
 export interface SalesLineDto {
@@ -40,6 +41,12 @@ export interface SalesDocumentSummaryDto {
   customerName: string;
   status: SalesDocumentStatus;
   subtotal: number;
+  discountPercent: number;
+  discountAmount: number;
+  taxPercent: number;
+  taxAmount: number;
+  freightAmount: number;
+  total: number;
   issueDate: string;
   updatedAt: string;
   lineCount: number;
@@ -58,6 +65,9 @@ export interface SalesDocumentInput {
   status: SalesDocumentStatus;
   issueDate: string;
   expiresAt: string | null;
+  discountPercent: number;
+  taxPercent: number;
+  freightAmount: number;
   notes: string;
   lines: SalesLineInput[];
 }