diff --git a/src/features/settings/lib/changelog-types.ts b/src/features/settings/lib/changelog-types.ts
index dfe8027..8df4cbc 100644
--- a/src/features/settings/lib/changelog-types.ts
+++ b/src/features/settings/lib/changelog-types.ts
@@ -1,6 +1,6 @@
 export type SectionType = "Adicionado" | "Alterado" | "Corrigido" | "Removido";
 
-export const SECTION_TYPES: readonly SectionType[] = [
+const SECTION_TYPES: readonly SectionType[] = [
 	"Adicionado",
 	"Alterado",
 	"Corrigido",
diff --git a/src/features/transactions/actions/core.ts b/src/features/transactions/actions/core.ts
index 244feb3..080a269 100644
--- a/src/features/transactions/actions/core.ts
+++ b/src/features/transactions/actions/core.ts
@@ -31,19 +31,6 @@ import { addMonthsToPeriod, MONTH_NAMES } from "@/shared/utils/period";
 // Authorization Validation Functions
 // ============================================================================
 
-export async function validatePayerOwnership(
-	userId: string,
-	payerId: string | null | undefined,
-): Promise<boolean> {
-	if (!payerId) return true;
-
-	const pagador = await db.query.payers.findFirst({
-		where: and(eq(payers.id, payerId), eq(payers.userId, userId)),
-	});
-
-	return !!pagador;
-}
-
 const normalizeIds = (ids: Array<string | null | undefined>) => [
 	...new Set(ids.filter((id): id is string => Boolean(id))),
 ];
@@ -592,7 +579,7 @@ type SplitShareInput = {
 	amount: number;
 };
 
-export const resolveSplitShares = (data: {
+const resolveSplitShares = (data: {
 	payerId?: string | null;
 	secondaryPayerId?: string | null;
 	splitShares?: SplitShareInput[];
diff --git a/src/features/transactions/components/dialogs/transaction-dialog/split-config-dialog.tsx b/src/features/transactions/components/dialogs/transaction-dialog/split-config-dialog.tsx
index 0b9fdbc..1034119 100644
--- a/src/features/transactions/components/dialogs/transaction-dialog/split-config-dialog.tsx
+++ b/src/features/transactions/components/dialogs/transaction-dialog/split-config-dialog.tsx
@@ -137,24 +137,6 @@ export function getSplitSummaryData(
 	};
 }
 
-export function getSplitSummaryLabel(
-	formState: FormState,
-	payerOptions: SplitSummaryPayerOption[],
-	totalAmount: number,
-) {
-	const summary = getSplitSummaryData(formState, payerOptions, totalAmount);
-
-	if (summary.type === "text") return summary.label;
-
-	const namesLabel = summary.participants
-		.map((participant) => participant.firstName)
-		.join(" ");
-	const remainingLabel =
-		summary.remainingCount > 0 ? ` +${summary.remainingCount}` : "";
-
-	return `${summary.count} pessoas: ${namesLabel}${remainingLabel} · ${summary.totalLabel}`;
-}
-
 export function SplitConfigDialog({
 	open,
 	onOpenChange,
diff --git a/src/features/transactions/lib/category-helpers.ts b/src/features/transactions/lib/category-helpers.ts
index 9d1c5bd..45240f0 100644
--- a/src/features/transactions/lib/category-helpers.ts
+++ b/src/features/transactions/lib/category-helpers.ts
@@ -61,13 +61,3 @@ export function groupAndSortCategories(
 			),
 	}));
 }
-
-/**
- * Filters secondary payer options to exclude the primary payer
- */
-export function filterSecondaryPayerOptions(
-	allOptions: SelectOption[],
-	primaryPayerId?: string,
-): SelectOption[] {
-	return allOptions.filter((option) => option.value !== primaryPayerId);
-}
diff --git a/src/features/transactions/lib/page-helpers.ts b/src/features/transactions/lib/page-helpers.ts
index f3bccb9..5043dfe 100644
--- a/src/features/transactions/lib/page-helpers.ts
+++ b/src/features/transactions/lib/page-helpers.ts
@@ -150,10 +150,7 @@ export const getSingleParam = (
 	return Array.isArray(value) ? (value[0] ?? null) : value;
 };
 
-export const getMultiParam = (
-	params: ResolvedSearchParams,
-	key: string,
-): string[] => {
+const getMultiParam = (params: ResolvedSearchParams, key: string): string[] => {
 	const value = params?.[key];
 	if (!value) {
 		return [];
diff --git a/src/shared/lib/logo/index.ts b/src/shared/lib/logo/index.ts
index 3c153f6..8a4d4fc 100644
--- a/src/shared/lib/logo/index.ts
+++ b/src/shared/lib/logo/index.ts
@@ -36,7 +36,7 @@ export const getLogoDisplayName = (logo?: string | null): string => {
  * @example
  * deriveNameFromLogo("my-company-logo.png") // "My Company Logo"
  */
-export const deriveNameFromLogo = (logo?: string | null) => {
+const deriveNameFromLogo = (logo?: string | null) => {
 	if (!logo) {
 		return "";
 	}