diff --git a/src/components/BatchTransactionForm.tsx b/src/components/BatchTransactionForm.tsx
index 0708366..af8369e 100644
--- a/src/components/BatchTransactionForm.tsx
+++ b/src/components/BatchTransactionForm.tsx
@@ -1,14 +1,13 @@
-import { useState } from 'react';
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Button } from '@/components/ui/button';
-import { Textarea } from '@/components/ui/textarea';
-import { Badge } from '@/components/ui/badge';
-import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from '@/components/ui/table';
-import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
-import { parseTransactionLine, formatISK, PastedTransaction } from '@/utils/priceUtils';
-import { IndTransactionRecordNoId, IndJobStatusOptions } from '@/lib/pbtypes';
+
+import { Card, CardContent } from '@/components/ui/card';
+import { IndTransactionRecordNoId } from '@/lib/pbtypes';
 import { IndJob } from '@/lib/types';
-import { X } from 'lucide-react';
+import { useBatchTransactionLogic } from '@/hooks/useBatchTransactionLogic';
+import BatchTransactionHeader from '@/components/batch-transaction/BatchTransactionHeader';
+import PasteTransactionInput from '@/components/batch-transaction/PasteTransactionInput';
+import TransactionStats from '@/components/batch-transaction/TransactionStats';
+import TransactionTable from '@/components/batch-transaction/TransactionTable';
+import TransactionActions from '@/components/batch-transaction/TransactionActions';
 
 interface BatchTransactionFormProps {
   onClose: () => void;
@@ -16,179 +15,24 @@ interface BatchTransactionFormProps {
   jobs: IndJob[];
 }
 
-interface TransactionGroup {
-  itemName: string;
-  transactions: PastedTransaction[];
-  totalQuantity: number;
-  totalValue: number;
-}
-
 const BatchTransactionForm: React.FC<BatchTransactionFormProps> = ({ onClose, onTransactionsAssigned, jobs }) => {
-  const [pastedData, setPastedData] = useState('');
-  const [transactionGroups, setTransactionGroups] = useState<TransactionGroup[]>([]);
-  const [duplicatesFound, setDuplicatesFound] = useState(0);
-
-  // Filter jobs that are either running, selling, or tracked
-  const eligibleJobs = jobs.filter(job =>
-    job.status === IndJobStatusOptions.Running ||
-    job.status === IndJobStatusOptions.Selling ||
-    job.status === IndJobStatusOptions.Tracked
-  );
-
-  const findMatchingJob = (itemName: string): string | undefined => {
-    // First try exact match
-    const exactMatch = eligibleJobs.find(job => job.outputItem === itemName);
-    if (exactMatch) return exactMatch.id;
-
-    // Then try case-insensitive match
-    const caseInsensitiveMatch = eligibleJobs.find(job =>
-      job.outputItem.toLowerCase() === itemName.toLowerCase()
-    );
-    if (caseInsensitiveMatch) return caseInsensitiveMatch.id;
-
-    return undefined;
-  };
-
-  const normalizeDate = (dateStr: string): string => {
-    // Convert any ISO date string to consistent format with space
-    return dateStr.replace('T', ' ');
-  };
-
-  const createTransactionKey = (parsed: PastedTransaction): string => {
-    if (!parsed) return '';
-    const key = [
-      normalizeDate(parsed.date.toString()),
-      parsed.itemName,
-      parsed.quantity.toString(),
-      parsed.totalPrice.toString(),
-      parsed.buyer,
-      parsed.location
-    ].join('|');
-    return key;
-  };
-
-  const createTransactionKeyFromRecord = (tx: IndTransactionRecordNoId): string => {
-    const key = [
-      normalizeDate(tx.date),
-      tx.itemName,
-      tx.quantity.toString(),
-      tx.totalPrice.toString(),
-      tx.buyer,
-      tx.location
-    ].join('|');
-    return key;
-  };
-
-  const handlePaste = (value: string) => {
-    setPastedData(value);
-    const lines = value.trim().split('\n');
-    const pasteTransactionMap = new Map<string, PastedTransaction>();
-
-    // STEP 1: First combine all identical transactions within the pasted data
-    lines.forEach((line) => {
-      const parsed: PastedTransaction | null = parseTransactionLine(line);
-      if (parsed) {
-        const transactionKey: string = createTransactionKey(parsed);
-
-        if (pasteTransactionMap.has(transactionKey)) {
-          // Merge with existing transaction in paste
-          const existing = pasteTransactionMap.get(transactionKey)!;
-          existing.quantity += parsed.quantity;
-          existing.totalPrice += Math.abs(parsed.totalPrice);
-          const newKey = createTransactionKey(existing);
-          pasteTransactionMap.set(newKey, existing);
-          pasteTransactionMap.delete(transactionKey); // Remove old key
-        } else {
-          // Add new transaction
-          pasteTransactionMap.set(transactionKey, parsed);
-        }
-      }
-    });
-
-    // STEP 2: Identify which jobs these transactions belong to
-    const relevantJobIds = new Set<string>();
-    pasteTransactionMap.forEach((transaction) => {
-      const matchingJobId = findMatchingJob(transaction.itemName);
-      if (matchingJobId) {
-        relevantJobIds.add(matchingJobId);
-        transaction.assignedJobId = matchingJobId;
-      }
-    });
-
-    // STEP 3: Only check against transactions from relevant jobs
-    const existingTransactionKeys = new Set<string>();
-    eligibleJobs.forEach(job => {
-      if (relevantJobIds.has(job.id)) {
-        job.income.forEach(tx => {
-          const key = createTransactionKeyFromRecord(tx);
-          existingTransactionKeys.add(key);
-        });
-      }
-    });
-
-    // STEP 4: Mark duplicates and assign jobs
-    let duplicates = 0;
-    pasteTransactionMap.forEach((transaction, key) => {
-      const isDuplicate = existingTransactionKeys.has(key);
-      transaction.isDuplicate = isDuplicate;
-
-      if (isDuplicate) {
-        duplicates++;
-        transaction.assignedJobId = undefined;
-      } else if (!!transaction.assignedJobId) {
-        transaction.assignedJobId = findMatchingJob(transaction.itemName);
-      }
-    });
-
-    // Convert map to array for display
-    const transactionList = Array.from(pasteTransactionMap.values());
-    setDuplicatesFound(duplicates);
-
-    // Create individual transaction groups (no grouping by item name)
-    const groups = transactionList.map(tx => ({
-      itemName: tx.itemName,
-      transactions: [tx],
-      totalQuantity: tx.quantity,
-      totalValue: tx.totalPrice
-    }));
-
-    setTransactionGroups(groups);
-  };
-
-  const handleAssignJob = (groupIndex: number, jobId: string) => {
-    setTransactionGroups(prev => {
-      const newGroups = [...prev];
-      newGroups[groupIndex].transactions.forEach(tx => {
-        tx.assignedJobId = jobId;
-      });
-      return newGroups;
-    });
-  };
+  const {
+    pastedData,
+    transactionGroups,
+    duplicatesFound,
+    eligibleJobs,
+    handlePaste,
+    handleAssignJob,
+    getAssignments,
+    canSubmit
+  } = useBatchTransactionLogic(jobs);
 
   const handleSubmit = () => {
-    // Group transactions by assigned job
-    const assignments = transactionGroups
-      .flatMap(group => group.transactions)
-      .filter(tx => tx.assignedJobId)
-      .reduce((acc, tx) => {
-        const jobId = tx.assignedJobId!;
-        const existing = acc.find(a => a.jobId === jobId);
-        if (existing) {
-          existing.transactions.push(tx);
-        } else {
-          acc.push({ jobId, transactions: [tx] });
-        }
-        return acc;
-      }, [] as { jobId: string, transactions: IndTransactionRecordNoId[] }[]);
-
+    const assignments = getAssignments();
     onTransactionsAssigned(assignments);
     onClose();
   };
 
-  const allAssigned = transactionGroups.every(group =>
-    group.transactions.every(tx => tx.assignedJobId)
-  );
-
   return (
     <div
       className="fixed inset-0 bg-black/50 flex items-center justify-center p-4 z-50"
@@ -198,132 +42,35 @@ const BatchTransactionForm: React.FC<BatchTransactionFormProps> = ({ onClose, on
         className="bg-gray-900 border-gray-700 text-white w-full max-w-4xl max-h-[90vh] overflow-y-auto"
         onClick={(e) => e.stopPropagation()}
       >
-        <CardHeader className="flex flex-row items-center justify-between sticky top-0 bg-gray-900 border-b border-gray-700 z-10">
-          <CardTitle className="text-blue-400">Batch Transaction Assignment</CardTitle>
-          <Button
-            variant="ghost"
-            size="icon"
-            onClick={onClose}
-            className="text-gray-400 hover:text-white"
-          >
-            <X className="h-4 w-4" />
-          </Button>
-        </CardHeader>
+        <BatchTransactionHeader onClose={onClose} />
+        
         <CardContent className="space-y-4">
-          <div className="space-y-2">
-            <label className="text-sm font-medium text-gray-300">
-              Paste EVE transaction data:
-            </label>
-            <Textarea
-              value={pastedData}
-              onChange={(e) => handlePaste(e.target.value)}
-              placeholder="Paste your EVE transaction data here..."
-              className="min-h-32 bg-gray-800 border-gray-600 text-white"
-            />
-          </div>
+          <PasteTransactionInput 
+            pastedData={pastedData}
+            onPaste={handlePaste}
+          />
 
           {transactionGroups.length > 0 && (
             <div className="space-y-4">
               <div className="flex items-center justify-between">
-                <div className="flex items-center gap-4">
-                  <Badge variant="outline" className="text-blue-400 border-blue-400">
-                    {transactionGroups.length} transactions found
-                  </Badge>
-                  {duplicatesFound > 0 && (
-                    <Badge variant="outline" className="text-yellow-400 border-yellow-400">
-                      {duplicatesFound} duplicates found
-                    </Badge>
-                  )}
-                </div>
+                <TransactionStats 
+                  transactionCount={transactionGroups.length}
+                  duplicatesFound={duplicatesFound}
+                />
               </div>
 
-              <Table>
-                <TableHeader>
-                  <TableRow className="border-gray-700">
-                    <TableHead className="text-gray-300">Item</TableHead>
-                    <TableHead className="text-gray-300">Quantity</TableHead>
-                    <TableHead className="text-gray-300">Total Value</TableHead>
-                    <TableHead className="text-gray-300">Assign To Job</TableHead>
-                  </TableRow>
-                </TableHeader>
-                <TableBody>
-                  {transactionGroups.map((group, index) => {
-                    const autoAssigned = group.transactions[0]?.assignedJobId;
-                    const isDuplicate = group.transactions[0]?.isDuplicate;
-                    const matchingJob = autoAssigned ? jobs.find(j => j.id === autoAssigned) : undefined;
+              <TransactionTable
+                transactionGroups={transactionGroups}
+                jobs={jobs}
+                eligibleJobs={eligibleJobs}
+                onAssignJob={handleAssignJob}
+              />
 
-                    return (
-                      <TableRow
-                        key={group.itemName}
-                        className={`border-gray-700 ${isDuplicate ? 'bg-red-900/30' : ''}`}
-                      >
-                        <TableCell className="text-white flex items-center gap-2">
-                          {group.itemName}
-                          {isDuplicate && (
-                            <Badge variant="destructive" className="bg-red-600">
-                              Duplicate
-                            </Badge>
-                          )}
-                        </TableCell>
-                        <TableCell className="text-gray-300">
-                          {group.totalQuantity.toLocaleString()}
-                        </TableCell>
-                        <TableCell className="text-green-400">
-                          {formatISK(group.totalValue)}
-                        </TableCell>
-                        <TableCell>
-                          {isDuplicate ? (
-                            <div className="text-red-400 text-sm">
-                              Transaction already exists
-                            </div>
-                          ) : (
-                            <Select
-                              value={group.transactions[0]?.assignedJobId || ''}
-                              onValueChange={(value) => handleAssignJob(index, value)}
-                            >
-                              <SelectTrigger
-                                className={`bg-gray-800 border-gray-600 text-white ${autoAssigned ? 'border-green-600' : ''}`}
-                              >
-                                <SelectValue placeholder={autoAssigned ? `Auto-assigned to ${matchingJob?.outputItem}` : 'Select a job'} />
-                              </SelectTrigger>
-                              <SelectContent className="bg-gray-800 border-gray-600">
-                                {eligibleJobs
-                                  .filter(job => job.outputItem.includes(group.itemName) || job.status === 'Tracked')
-                                  .map(job => (
-                                    <SelectItem
-                                      key={job.id}
-                                      value={job.id}
-                                      className="text-white"
-                                    >
-                                      {job.outputItem} ({job.status})
-                                    </SelectItem>
-                                  ))}
-                              </SelectContent>
-                            </Select>
-                          )}
-                        </TableCell>
-                      </TableRow>
-                    );
-                  })}
-                </TableBody>
-              </Table>
-
-              <div className="flex justify-end gap-2">
-                <Button
-                  variant="outline"
-                  onClick={onClose}
-                  className="border-gray-600 hover:bg-gray-800"
-                >
-                  Cancel
-                </Button>
-                <Button
-                  onClick={handleSubmit}
-                  disabled={!transactionGroups.some(g => g.transactions.some(tx => !tx.isDuplicate && tx.assignedJobId))}
-                  className="bg-blue-600 hover:bg-blue-700"
-                >
-                  Assign Transactions
-                </Button>
-              </div>
+              <TransactionActions
+                onCancel={onClose}
+                onSubmit={handleSubmit}
+                canSubmit={canSubmit}
+              />
             </div>
           )}
         </CardContent>
@@ -332,4 +79,4 @@ const BatchTransactionForm: React.FC<BatchTransactionFormProps> = ({ onClose, on
   );
 };
 
-export default BatchTransactionForm;
\ No newline at end of file
+export default BatchTransactionForm;
diff --git a/src/components/batch-transaction/BatchTransactionHeader.tsx b/src/components/batch-transaction/BatchTransactionHeader.tsx
new file mode 100644
index 0000000..27c86e6
--- /dev/null
+++ b/src/components/batch-transaction/BatchTransactionHeader.tsx
@@ -0,0 +1,26 @@
+
+import { Button } from '@/components/ui/button';
+import { CardHeader, CardTitle } from '@/components/ui/card';
+import { X } from 'lucide-react';
+
+interface BatchTransactionHeaderProps {
+  onClose: () => void;
+}
+
+const BatchTransactionHeader: React.FC<BatchTransactionHeaderProps> = ({ onClose }) => {
+  return (
+    <CardHeader className="flex flex-row items-center justify-between sticky top-0 bg-gray-900 border-b border-gray-700 z-10">
+      <CardTitle className="text-blue-400">Batch Transaction Assignment</CardTitle>
+      <Button
+        variant="ghost"
+        size="icon"
+        onClick={onClose}
+        className="text-gray-400 hover:text-white"
+      >
+        <X className="h-4 w-4" />
+      </Button>
+    </CardHeader>
+  );
+};
+
+export default BatchTransactionHeader;
diff --git a/src/components/batch-transaction/PasteTransactionInput.tsx b/src/components/batch-transaction/PasteTransactionInput.tsx
new file mode 100644
index 0000000..1e23504
--- /dev/null
+++ b/src/components/batch-transaction/PasteTransactionInput.tsx
@@ -0,0 +1,36 @@
+
+import { useRef, useEffect } from 'react';
+import { Textarea } from '@/components/ui/textarea';
+
+interface PasteTransactionInputProps {
+  pastedData: string;
+  onPaste: (value: string) => void;
+}
+
+const PasteTransactionInput: React.FC<PasteTransactionInputProps> = ({ pastedData, onPaste }) => {
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+
+  // Auto focus the textarea when component mounts
+  useEffect(() => {
+    if (textareaRef.current) {
+      textareaRef.current.focus();
+    }
+  }, []);
+
+  return (
+    <div className="space-y-2">
+      <label className="text-sm font-medium text-gray-300">
+        Paste EVE transaction data:
+      </label>
+      <Textarea
+        ref={textareaRef}
+        value={pastedData}
+        onChange={(e) => onPaste(e.target.value)}
+        placeholder="Paste your EVE transaction data here..."
+        className="min-h-32 bg-gray-800 border-gray-600 text-white"
+      />
+    </div>
+  );
+};
+
+export default PasteTransactionInput;
diff --git a/src/components/batch-transaction/TransactionActions.tsx b/src/components/batch-transaction/TransactionActions.tsx
new file mode 100644
index 0000000..52fb6c3
--- /dev/null
+++ b/src/components/batch-transaction/TransactionActions.tsx
@@ -0,0 +1,35 @@
+
+import { Button } from '@/components/ui/button';
+
+interface TransactionActionsProps {
+  onCancel: () => void;
+  onSubmit: () => void;
+  canSubmit: boolean;
+}
+
+const TransactionActions: React.FC<TransactionActionsProps> = ({
+  onCancel,
+  onSubmit,
+  canSubmit
+}) => {
+  return (
+    <div className="flex justify-end gap-2">
+      <Button
+        variant="outline"
+        onClick={onCancel}
+        className="border-gray-600 hover:bg-gray-800"
+      >
+        Cancel
+      </Button>
+      <Button
+        onClick={onSubmit}
+        disabled={!canSubmit}
+        className="bg-blue-600 hover:bg-blue-700"
+      >
+        Assign Transactions
+      </Button>
+    </div>
+  );
+};
+
+export default TransactionActions;
diff --git a/src/components/batch-transaction/TransactionStats.tsx b/src/components/batch-transaction/TransactionStats.tsx
new file mode 100644
index 0000000..9502eef
--- /dev/null
+++ b/src/components/batch-transaction/TransactionStats.tsx
@@ -0,0 +1,24 @@
+
+import { Badge } from '@/components/ui/badge';
+
+interface TransactionStatsProps {
+  transactionCount: number;
+  duplicatesFound: number;
+}
+
+const TransactionStats: React.FC<TransactionStatsProps> = ({ transactionCount, duplicatesFound }) => {
+  return (
+    <div className="flex items-center gap-4">
+      <Badge variant="outline" className="text-blue-400 border-blue-400">
+        {transactionCount} transactions found
+      </Badge>
+      {duplicatesFound > 0 && (
+        <Badge variant="outline" className="text-yellow-400 border-yellow-400">
+          {duplicatesFound} duplicates found
+        </Badge>
+      )}
+    </div>
+  );
+};
+
+export default TransactionStats;
diff --git a/src/components/batch-transaction/TransactionTable.tsx b/src/components/batch-transaction/TransactionTable.tsx
new file mode 100644
index 0000000..6e63820
--- /dev/null
+++ b/src/components/batch-transaction/TransactionTable.tsx
@@ -0,0 +1,102 @@
+
+import { Badge } from '@/components/ui/badge';
+import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from '@/components/ui/table';
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
+import { formatISK } from '@/utils/priceUtils';
+import { IndJob } from '@/lib/types';
+
+interface TransactionGroup {
+  itemName: string;
+  transactions: any[];
+  totalQuantity: number;
+  totalValue: number;
+}
+
+interface TransactionTableProps {
+  transactionGroups: TransactionGroup[];
+  jobs: IndJob[];
+  eligibleJobs: IndJob[];
+  onAssignJob: (groupIndex: number, jobId: string) => void;
+}
+
+const TransactionTable: React.FC<TransactionTableProps> = ({
+  transactionGroups,
+  jobs,
+  eligibleJobs,
+  onAssignJob
+}) => {
+  return (
+    <Table>
+      <TableHeader>
+        <TableRow className="border-gray-700">
+          <TableHead className="text-gray-300">Item</TableHead>
+          <TableHead className="text-gray-300">Quantity</TableHead>
+          <TableHead className="text-gray-300">Total Value</TableHead>
+          <TableHead className="text-gray-300">Assign To Job</TableHead>
+        </TableRow>
+      </TableHeader>
+      <TableBody>
+        {transactionGroups.map((group, index) => {
+          const autoAssigned = group.transactions[0]?.assignedJobId;
+          const isDuplicate = group.transactions[0]?.isDuplicate;
+          const matchingJob = autoAssigned ? jobs.find(j => j.id === autoAssigned) : undefined;
+
+          return (
+            <TableRow
+              key={group.itemName}
+              className={`border-gray-700 ${isDuplicate ? 'bg-red-900/30' : ''}`}
+            >
+              <TableCell className="text-white flex items-center gap-2">
+                {group.itemName}
+                {isDuplicate && (
+                  <Badge variant="destructive" className="bg-red-600">
+                    Duplicate
+                  </Badge>
+                )}
+              </TableCell>
+              <TableCell className="text-gray-300">
+                {group.totalQuantity.toLocaleString()}
+              </TableCell>
+              <TableCell className="text-green-400">
+                {formatISK(group.totalValue)}
+              </TableCell>
+              <TableCell>
+                {isDuplicate ? (
+                  <div className="text-red-400 text-sm">
+                    Transaction already exists
+                  </div>
+                ) : (
+                  <Select
+                    value={group.transactions[0]?.assignedJobId || ''}
+                    onValueChange={(value) => onAssignJob(index, value)}
+                  >
+                    <SelectTrigger
+                      className={`bg-gray-800 border-gray-600 text-white ${autoAssigned ? 'border-green-600' : ''}`}
+                    >
+                      <SelectValue placeholder={autoAssigned ? `Auto-assigned to ${matchingJob?.outputItem}` : 'Select a job'} />
+                    </SelectTrigger>
+                    <SelectContent className="bg-gray-800 border-gray-600">
+                      {eligibleJobs
+                        .filter(job => job.outputItem.includes(group.itemName) || job.status === 'Tracked')
+                        .map(job => (
+                          <SelectItem
+                            key={job.id}
+                            value={job.id}
+                            className="text-white"
+                          >
+                            {job.outputItem} ({job.status})
+                          </SelectItem>
+                        ))}
+                    </SelectContent>
+                  </Select>
+                )}
+              </TableCell>
+            </TableRow>
+          );
+        })}
+      </TableBody>
+    </Table>
+  );
+};
+
+export default TransactionTable;
diff --git a/src/hooks/useBatchTransactionLogic.ts b/src/hooks/useBatchTransactionLogic.ts
new file mode 100644
index 0000000..1e144db
--- /dev/null
+++ b/src/hooks/useBatchTransactionLogic.ts
@@ -0,0 +1,185 @@
+
+import { useState } from 'react';
+import { parseTransactionLine, PastedTransaction } from '@/utils/priceUtils';
+import { IndTransactionRecordNoId, IndJobStatusOptions } from '@/lib/pbtypes';
+import { IndJob } from '@/lib/types';
+
+interface TransactionGroup {
+  itemName: string;
+  transactions: PastedTransaction[];
+  totalQuantity: number;
+  totalValue: number;
+}
+
+export const useBatchTransactionLogic = (jobs: IndJob[]) => {
+  const [pastedData, setPastedData] = useState('');
+  const [transactionGroups, setTransactionGroups] = useState<TransactionGroup[]>([]);
+  const [duplicatesFound, setDuplicatesFound] = useState(0);
+
+  // Filter jobs that are either running, selling, or tracked
+  const eligibleJobs = jobs.filter(job =>
+    job.status === IndJobStatusOptions.Running ||
+    job.status === IndJobStatusOptions.Selling ||
+    job.status === IndJobStatusOptions.Tracked
+  );
+
+  const findMatchingJob = (itemName: string): string | undefined => {
+    // First try exact match
+    const exactMatch = eligibleJobs.find(job => job.outputItem === itemName);
+    if (exactMatch) return exactMatch.id;
+
+    // Then try case-insensitive match
+    const caseInsensitiveMatch = eligibleJobs.find(job =>
+      job.outputItem.toLowerCase() === itemName.toLowerCase()
+    );
+    if (caseInsensitiveMatch) return caseInsensitiveMatch.id;
+
+    return undefined;
+  };
+
+  const normalizeDate = (dateStr: string): string => {
+    // Convert any ISO date string to consistent format with space
+    return dateStr.replace('T', ' ');
+  };
+
+  const createTransactionKey = (parsed: PastedTransaction): string => {
+    if (!parsed) return '';
+    const key = [
+      normalizeDate(parsed.date.toString()),
+      parsed.itemName,
+      parsed.quantity.toString(),
+      parsed.totalPrice.toString(),
+      parsed.buyer,
+      parsed.location
+    ].join('|');
+    return key;
+  };
+
+  const createTransactionKeyFromRecord = (tx: IndTransactionRecordNoId): string => {
+    const key = [
+      normalizeDate(tx.date),
+      tx.itemName,
+      tx.quantity.toString(),
+      tx.totalPrice.toString(),
+      tx.buyer,
+      tx.location
+    ].join('|');
+    return key;
+  };
+
+  const handlePaste = (value: string) => {
+    setPastedData(value);
+    const lines = value.trim().split('\n');
+    const pasteTransactionMap = new Map<string, PastedTransaction>();
+
+    // STEP 1: First combine all identical transactions within the pasted data
+    lines.forEach((line) => {
+      const parsed: PastedTransaction | null = parseTransactionLine(line);
+      if (parsed) {
+        const transactionKey: string = createTransactionKey(parsed);
+
+        if (pasteTransactionMap.has(transactionKey)) {
+          // Merge with existing transaction in paste
+          const existing = pasteTransactionMap.get(transactionKey)!;
+          existing.quantity += parsed.quantity;
+          existing.totalPrice += Math.abs(parsed.totalPrice);
+          const newKey = createTransactionKey(existing);
+          pasteTransactionMap.set(newKey, existing);
+          pasteTransactionMap.delete(transactionKey); // Remove old key
+        } else {
+          // Add new transaction
+          pasteTransactionMap.set(transactionKey, parsed);
+        }
+      }
+    });
+
+    // STEP 2: Identify which jobs these transactions belong to
+    const relevantJobIds = new Set<string>();
+    pasteTransactionMap.forEach((transaction) => {
+      const matchingJobId = findMatchingJob(transaction.itemName);
+      if (matchingJobId) {
+        relevantJobIds.add(matchingJobId);
+        transaction.assignedJobId = matchingJobId;
+      }
+    });
+
+    // STEP 3: Only check against transactions from relevant jobs
+    const existingTransactionKeys = new Set<string>();
+    eligibleJobs.forEach(job => {
+      if (relevantJobIds.has(job.id)) {
+        job.income.forEach(tx => {
+          const key = createTransactionKeyFromRecord(tx);
+          existingTransactionKeys.add(key);
+        });
+      }
+    });
+
+    // STEP 4: Mark duplicates and assign jobs
+    let duplicates = 0;
+    pasteTransactionMap.forEach((transaction, key) => {
+      const isDuplicate = existingTransactionKeys.has(key);
+      transaction.isDuplicate = isDuplicate;
+
+      if (isDuplicate) {
+        duplicates++;
+        transaction.assignedJobId = undefined;
+      } else if (!!transaction.assignedJobId) {
+        transaction.assignedJobId = findMatchingJob(transaction.itemName);
+      }
+    });
+
+    // Convert map to array for display
+    const transactionList = Array.from(pasteTransactionMap.values());
+    setDuplicatesFound(duplicates);
+
+    // Create individual transaction groups (no grouping by item name)
+    const groups = transactionList.map(tx => ({
+      itemName: tx.itemName,
+      transactions: [tx],
+      totalQuantity: tx.quantity,
+      totalValue: tx.totalPrice
+    }));
+
+    setTransactionGroups(groups);
+  };
+
+  const handleAssignJob = (groupIndex: number, jobId: string) => {
+    setTransactionGroups(prev => {
+      const newGroups = [...prev];
+      newGroups[groupIndex].transactions.forEach(tx => {
+        tx.assignedJobId = jobId;
+      });
+      return newGroups;
+    });
+  };
+
+  const getAssignments = () => {
+    // Group transactions by assigned job
+    return transactionGroups
+      .flatMap(group => group.transactions)
+      .filter(tx => tx.assignedJobId)
+      .reduce((acc, tx) => {
+        const jobId = tx.assignedJobId!;
+        const existing = acc.find(a => a.jobId === jobId);
+        if (existing) {
+          existing.transactions.push(tx);
+        } else {
+          acc.push({ jobId, transactions: [tx] });
+        }
+        return acc;
+      }, [] as { jobId: string, transactions: IndTransactionRecordNoId[] }[]);
+  };
+
+  const canSubmit = transactionGroups.some(g => g.transactions.some(tx => !tx.isDuplicate && tx.assignedJobId));
+
+  return {
+    pastedData,
+    transactionGroups,
+    duplicatesFound,
+    eligibleJobs,
+    handlePaste,
+    handleAssignJob,
+    getAssignments,
+    canSubmit
+  };
+};