diff --git a/src/lib/billing-report-pdf.ts b/src/lib/billing-report-pdf.ts
new file mode 100644
index 0000000..14cd027
--- /dev/null
+++ b/src/lib/billing-report-pdf.ts
@@ -0,0 +1,112 @@
+import jsPDF from "jspdf";
+import autoTable from "jspdf-autotable";
+
+export interface TimeReportRow {
+  work_date: string;
+  case_label: string;
+  user_name: string;
+  description: string;
+  hours: number;
+  rate: number;
+  amount: number;
+  billable: boolean;
+}
+
+export interface ExpenseReportRow {
+  expense_date: string;
+  case_label: string;
+  user_name: string;
+  description: string;
+  amount: number;
+  billable: boolean;
+}
+
+interface BaseOpts {
+  clientName: string;
+  fromDate?: string;
+  toDate?: string;
+}
+
+function fmtDate(iso?: string | null) {
+  if (!iso) return "—";
+  const m = iso.match(/^(\d{4})-(\d{2})-(\d{2})/);
+  if (m) {
+    const d = new Date(Date.UTC(+m[1], +m[2] - 1, +m[3]));
+    return d.toLocaleDateString("en-US", { year: "numeric", month: "short", day: "numeric", timeZone: "UTC" });
+  }
+  return new Date(iso).toLocaleDateString("en-US");
+}
+
+function fmtCurrency(n: number) {
+  return new Intl.NumberFormat("en-US", { style: "currency", currency: "USD" }).format(n || 0);
+}
+
+function header(doc: jsPDF, title: string, opts: BaseOpts) {
+  const margin = 54;
+  doc.setFont("times", "bold");
+  doc.setFontSize(18);
+  doc.text(title, margin, margin);
+  doc.setFont("times", "normal");
+  doc.setFontSize(11);
+  doc.setTextColor(90);
+  doc.text(opts.clientName, margin, margin + 22);
+  if (opts.fromDate || opts.toDate) {
+    const range = `${opts.fromDate ? fmtDate(opts.fromDate) : "—"} to ${opts.toDate ? fmtDate(opts.toDate) : "—"}`;
+    doc.text(range, margin, margin + 38);
+  }
+  doc.setTextColor(0);
+}
+
+export function generateTimeReportPdf(opts: BaseOpts & { rows: TimeReportRow[] }): jsPDF {
+  const doc = new jsPDF({ unit: "pt", format: "letter" });
+  header(doc, "Time Report", opts);
+  const totalHours = opts.rows.reduce((a, r) => a + (r.hours || 0), 0);
+  const totalAmt = opts.rows.reduce((a, r) => a + (r.amount || 0), 0);
+  autoTable(doc, {
+    startY: 110,
+    head: [["Date", "Case", "User", "Description", "Hours", "Rate", "Amount"]],
+    body: opts.rows.map((r) => [
+      fmtDate(r.work_date),
+      r.case_label,
+      r.user_name,
+      r.description,
+      r.hours.toFixed(2),
+      fmtCurrency(r.rate),
+      fmtCurrency(r.amount),
+    ]),
+    foot: [["", "", "", "Totals", totalHours.toFixed(2), "", fmtCurrency(totalAmt)]],
+    styles: { font: "times", fontSize: 9, cellPadding: 4 },
+    headStyles: { fillColor: [240, 240, 240], textColor: 20 },
+    footStyles: { fillColor: [240, 240, 240], textColor: 20, fontStyle: "bold" },
+    columnStyles: {
+      4: { halign: "right" },
+      5: { halign: "right" },
+      6: { halign: "right" },
+    },
+  });
+  return doc;
+}
+
+export function generateExpenseReportPdf(opts: BaseOpts & { rows: ExpenseReportRow[] }): jsPDF {
+  const doc = new jsPDF({ unit: "pt", format: "letter" });
+  header(doc, "Expense Report", opts);
+  const totalAmt = opts.rows.reduce((a, r) => a + (r.amount || 0), 0);
+  autoTable(doc, {
+    startY: 110,
+    head: [["Date", "Case", "User", "Description", "Billable", "Amount"]],
+    body: opts.rows.map((r) => [
+      fmtDate(r.expense_date),
+      r.case_label,
+      r.user_name,
+      r.description,
+      r.billable ? "Yes" : "No",
+      fmtCurrency(r.amount),
+    ]),
+    foot: [["", "", "", "", "Total", fmtCurrency(totalAmt)]],
+    styles: { font: "times", fontSize: 9, cellPadding: 4 },
+    headStyles: { fillColor: [240, 240, 240], textColor: 20 },
+    footStyles: { fillColor: [240, 240, 240], textColor: 20, fontStyle: "bold" },
+    columnStyles: { 5: { halign: "right" } },
+  });
+  return doc;
+}