diff --git a/example/src/Onboarding.tsx b/example/src/Onboarding.tsx
index cb4eae92..be6da590 100644
--- a/example/src/Onboarding.tsx
+++ b/example/src/Onboarding.tsx
@@ -270,6 +270,19 @@ const OnboardingWithProps = ({
       render={OnBoardingRender}
       employmentId={employmentId}
       externalId={externalId}
+      options={{
+        jsfModify: {
+          basic_information: {
+            fields: {
+              tax_servicing_countries: {
+                presentation: {
+                  enableCustomTaxServicingComponent: true,
+                },
+              },
+            },
+          },
+        },
+      }}
     />
   </RemoteFlows>
 );
diff --git a/src/flows/Onboarding/components/TaxServicingCountries.tsx b/src/flows/Onboarding/components/TaxServicingCountries.tsx
new file mode 100644
index 00000000..2afbd179
--- /dev/null
+++ b/src/flows/Onboarding/components/TaxServicingCountries.tsx
@@ -0,0 +1,218 @@
+import { useFormFields } from '@/src/context';
+import { $TSFixMe, Components, JSFField } from '@/src/types/remoteFlows';
+import { useFormContext } from 'react-hook-form';
+import {
+  FormControl,
+  FormDescription,
+  FormField,
+  FormItem,
+  FormLabel,
+  FormMessage,
+} from '@/src/components/ui/form';
+import { MultiSelect } from '@/src/components/ui/multi-select';
+import { useState, useCallback, useMemo } from 'react';
+
+type TaxCountriesFieldProps = JSFField & {
+  placeholder?: string;
+  options?: Array<{ value: string; label: string }>;
+  className?: string;
+  onChange?: (value: $TSFixMe) => void;
+  component?: Components['multi-select'];
+  $meta?: {
+    regions?: Record<string, string[]>;
+    subregions?: Record<string, string[]>;
+  };
+};
+
+// Constants for tax servicing countries logic
+const GLOBAL_OPTION = { label: 'Global', value: 'GLOBAL', type: 'global' };
+const AREA_TYPE = {
+  REGIONS: 'regions',
+  SUBREGIONS: 'subregions',
+  COUNTRIES: 'countries',
+};
+
+export function TaxServicingCountriesField({
+  label,
+  name,
+  options,
+  defaultValue,
+  description,
+  onChange,
+  component,
+  $meta,
+  ...rest
+}: TaxCountriesFieldProps) {
+  const { control } = useFormContext();
+  const { components } = useFormFields();
+  const [selected, setSelected] = useState<$TSFixMe[]>();
+
+  // Enhanced options with regions/subregions/countries
+  const enhancedOptions = useMemo(() => {
+    const { regions = {}, subregions = {} } = $meta || {};
+
+    const regionsOptions = [
+      GLOBAL_OPTION,
+      ...Object.keys(regions).map((region) => ({
+        label: region,
+        value: region,
+        type: AREA_TYPE.REGIONS,
+        category: 'Regions',
+      })),
+    ];
+
+    const subregionsOptions = Object.keys(subregions).map((subregion) => ({
+      label: subregion,
+      value: subregion,
+      type: AREA_TYPE.SUBREGIONS,
+      category: 'Subregions',
+    }));
+
+    const countriesOptions =
+      options?.map((option) => ({
+        ...option,
+        type: AREA_TYPE.COUNTRIES,
+        category: 'Countries',
+      })) || [];
+
+    return [...regionsOptions, ...subregionsOptions, ...countriesOptions];
+  }, [options, $meta]);
+
+  // Enhanced change handler with regions/subregions logic
+  const handleChange = useCallback(
+    (rawValues: $TSFixMe[]) => {
+      const { regions = {}, subregions = {} } = $meta || {};
+
+      if (!rawValues?.length) {
+        onChange?.([]);
+        setSelected([]);
+        return;
+      }
+
+      // Check if Global is being selected
+      const isGlobalSelected = rawValues.some(
+        (option) => option.value === GLOBAL_OPTION.value,
+      );
+
+      // If Global is selected, clear all other selections and only keep Global
+      if (isGlobalSelected) {
+        // If Global was already selected and user is trying to add more options, ignore the new selections
+        if (selected?.some((option) => option.value === GLOBAL_OPTION.value)) {
+          return; // Don't change anything if Global is already selected
+        }
+
+        // If Global is being selected for the first time, clear everything else
+        onChange?.([GLOBAL_OPTION.value]);
+        setSelected([GLOBAL_OPTION]);
+        return;
+      }
+
+      // If Global is currently selected and user is trying to select other options, ignore them
+      if (selected?.some((option) => option.value === GLOBAL_OPTION.value)) {
+        return; // Don't allow other selections when Global is selected
+      }
+
+      // Track countries to prevent duplicates when multiple overlapping areas are selected
+      const existingCountries = new Set();
+      const updatedSelected = rawValues.flatMap((option) => {
+        // If the selection is a country, add it directly
+        if (option.type === AREA_TYPE.COUNTRIES) {
+          existingCountries.add(option.value);
+          return [option];
+        }
+
+        // For regions/subregions, look up their countries
+        const lookupLabel = option.originalLabel || option.label;
+        const areaCountries =
+          option.type === AREA_TYPE.REGIONS
+            ? regions[lookupLabel] || []
+            : subregions[lookupLabel] || [];
+
+        // Convert each country name into a country option object
+        return areaCountries
+          .filter((country) => !existingCountries.has(country))
+          .map((country) => {
+            existingCountries.add(country);
+            return {
+              label: country,
+              value: country,
+              type: AREA_TYPE.COUNTRIES,
+              category: 'Countries',
+            };
+          });
+      });
+
+      // Extract just the country values for the form
+      const countryValues = updatedSelected
+        .filter((option) => option.type === AREA_TYPE.COUNTRIES)
+        .map((option) => option.value);
+
+      onChange?.(countryValues);
+      setSelected(updatedSelected);
+    },
+    [$meta, onChange, selected], // Added selected to dependencies
+  );
+
+  return (
+    <FormField
+      defaultValue={defaultValue}
+      control={control}
+      name={name}
+      render={({ field, fieldState }) => {
+        const CustomSelectField = component || components?.['multi-select'];
+        if (CustomSelectField) {
+          const customSelectFieldProps = {
+            label,
+            name,
+            options: enhancedOptions,
+            defaultValue,
+            description,
+            onChange: handleChange,
+            $meta,
+            ...rest,
+          };
+          return (
+            <CustomSelectField
+              field={{
+                ...field,
+                onChange: (value: $TSFixMe) => {
+                  field.onChange(value);
+                  handleChange(value);
+                },
+              }}
+              fieldState={fieldState}
+              fieldData={customSelectFieldProps}
+            />
+          );
+        }
+
+        const selectedOptions =
+          selected ||
+          enhancedOptions.filter((option) =>
+            field.value?.includes(option.value),
+          );
+
+        return (
+          <FormItem
+            data-field={name}
+            className={`RemoteFlows__TaxCountriesField__Item__${name}`}
+          >
+            <FormLabel className='RemoteFlows__TaxCountriesField__Label'>
+              {label}
+            </FormLabel>
+            <FormControl>
+              <MultiSelect
+                options={enhancedOptions}
+                selected={selectedOptions}
+                onChange={handleChange}
+                {...rest}
+              />
+            </FormControl>
+            {description && <FormDescription>{description}</FormDescription>}
+            {fieldState.error && <FormMessage />}
+          </FormItem>
+        );
+      }}
+    />
+  );
+}
diff --git a/src/flows/Onboarding/hooks.tsx b/src/flows/Onboarding/hooks.tsx
index ec1e0424..3a7f1a2f 100644
--- a/src/flows/Onboarding/hooks.tsx
+++ b/src/flows/Onboarding/hooks.tsx
@@ -39,6 +39,7 @@ import { FlowOptions, JSFModify, JSONSchemaFormType } from '@/src/flows/types';
 import { AnnualGrossSalary } from '@/src/flows/Onboarding/components/AnnualGrossSalary';
 import { $TSFixMe, JSFField, JSFFieldset, Meta } from '@/src/types/remoteFlows';
 import { EquityPriceDetails } from '@/src/flows/Onboarding/components/EquityPriceDetails';
+import { TaxServicingCountriesField } from '@/src/flows/Onboarding/components/TaxServicingCountries';
 
 type OnboardingHookProps = OnboardingFlowParams;
 
@@ -277,13 +278,57 @@ export const useOnboarding = ({
         Boolean(employmentId)),
   );
 
+  const taxServicingCountriesField =
+    options?.jsfModify?.basic_information?.fields?.tax_servicing_countries;
+  const taxServicingCountriesFieldPresentation =
+    taxServicingCountriesField &&
+    typeof taxServicingCountriesField === 'object' &&
+    'presentation' in taxServicingCountriesField
+      ? (
+          taxServicingCountriesField as {
+            presentation?: {
+              enableCustomTaxServicingComponent?: boolean;
+            };
+          }
+        ).presentation
+      : undefined;
+
+  const customBasicInformationFields = useMemo(() => {
+    const enableCustomTaxServicingComponent =
+      taxServicingCountriesFieldPresentation?.enableCustomTaxServicingComponent !==
+      false;
+
+    return {
+      fields: {
+        tax_servicing_countries: {
+          ...taxServicingCountriesField,
+          presentation: {
+            ...taxServicingCountriesFieldPresentation,
+            enableCustomTaxServicingComponent,
+            ...(enableCustomTaxServicingComponent && {
+              Component: (props: JSFField) => {
+                return <TaxServicingCountriesField {...props} />;
+              },
+            }),
+          },
+        },
+      },
+    };
+  }, [taxServicingCountriesField, taxServicingCountriesFieldPresentation]);
+
   const {
     data: basicInformationForm,
     isLoading: isLoadingBasicInformationForm,
   } = useJSONSchema({
     form: 'employment_basic_information',
     options: {
-      jsfModify: options?.jsfModify?.basic_information,
+      jsfModify: {
+        ...options?.jsfModify?.basic_information,
+        fields: {
+          ...options?.jsfModify?.basic_information?.fields,
+          ...customBasicInformationFields.fields,
+        },
+      },
       queryOptions: {
         enabled: isBasicInformationDetailsEnabled,
       },
@@ -312,7 +357,7 @@ export const useOnboarding = ({
   const equityCompensationField =
     options?.jsfModify?.contract_details?.fields?.equity_compensation;
 
-  const customFields = useMemo(
+  const customContractDetailsFields = useMemo(
     () => ({
       fields: {
         annual_gross_salary: {
@@ -380,7 +425,7 @@ export const useOnboarding = ({
           ...options?.jsfModify?.contract_details,
           fields: {
             ...options?.jsfModify?.contract_details?.fields,
-            ...customFields.fields,
+            ...customContractDetailsFields.fields,
           },
         },
         queryOptions: {