Cost of Goods Sold cannot exceed Gross Receipts in this simplified calculation unless it results in a loss. Please check inputs.

'; downloadPdfButton.style.display = 'none'; // Switch to summary tab to show error document.getElementById('f1120-income-deductions-tab').classList.remove('active'); document.getElementById('f1120-summary-tab').classList.add('active'); document.querySelector('.f1120-tab-button[data-tab="income-deductions"]').classList.remove('active'); document.querySelector('.f1120-tab-button[data-tab="summary"]').classList.add('active'); return; } // Calculations const grossProfit = grossReceipts - cogs; const totalIncome = grossProfit + otherIncome; const totalDeductions = compensation + rent + taxesLicenses + interest + depreciation + advertising + otherDeductions; const taxableIncome = totalIncome - totalDeductions; // Basic Tax Calculation (using the flat 21% rate) const basicCorporateTax = Math.max(0, taxableIncome) * corporateTaxRate; // Tax only on positive income let summaryHTML = ''; summaryHTML += '

Input Summary

'; summaryHTML += ''; summaryHTML += '

Calculation Results (Simplified)

'; const grossProfitClass = grossProfit >= 0 ? 'f1120-amount-positive' : 'f1120-amount-negative'; summaryHTML += `

Gross Profit: ${grossProfit.toFixed(2)} $

`; const totalIncomeClass = totalIncome >= 0 ? 'f1120-amount-positive' : 'f1120-amount-negative'; summaryHTML += `

Total Income: ${totalIncome.toFixed(2)} $

`; const totalDeductionsClass = totalDeductions >= 0 ? 'f1120-amount-positive' : 'f1120-amount-negative'; // Deductions are positive numbers reducing income summaryHTML += `

Total Calculated Deductions: ${totalDeductions.toFixed(2)} $

`; // No class needed for deductions themselves summaryHTML += `

Estimated Taxable Income / (Net Operating Loss): `; const taxableIncomeClass = taxableIncome >= 0 ? 'f1120-amount-positive' : 'f1120-amount-negative'; summaryHTML += `${taxableIncome.toFixed(2)} $

`; summaryHTML += `

Estimated Basic Corporate Income Tax (at ${corporateTaxRate * 100}%): `; const basicTaxClass = basicCorporateTax > 0 ? 'f1120-amount-positive' : ''; // Only highlight if tax is positive summaryHTML += `${basicCorporateTax.toFixed(2)} $

`; summaryOutput.innerHTML = summaryHTML; downloadPdfButton.style.display = 'inline-block'; // Show download button } // Event listener for calculation button calculateButton.addEventListener('click', calculateAndDisplaySummary); // --- PDF Download Functionality --- downloadPdfButton.addEventListener('click', async function() { // The element to convert to PDF is the summary output div const element = document.getElementById('f1120-summary-output'); // Create a clone of the element to avoid modifying the visible DOM const elementToPrint = element.cloneNode(true); elementToPrint.style.width = '800px'; // Set a specific width for PDF rendering elementToPrint.style.padding = '20px'; elementToPrint.style.backgroundColor = '#fff'; // Ensure background is white in PDF elementToPrint.style.color = '#333'; // Ensure text color is dark elementToPrint.style.fontSize = '10pt'; // Adjust font size for PDF // Apply styles to cloned summary box const summaryBox = elementToPrint.querySelector('.f1120-summary-box'); if(summaryBox) { summaryBox.style.border = '1px solid #007bff'; summaryBox.style.padding = '15px'; summaryBox.style.marginTop = '20px'; summaryBox.style.borderRadius = '5px'; summaryBox.style.backgroundColor = '#e9f5ff'; } const summaryItems = elementToPrint.querySelectorAll('.f1120-summary-box .f1120-summary-item'); summaryItems.forEach(item => { item.style.borderBottom = '1px dashed #cce5ff'; item.style.marginBottom = '8px'; item.style.paddingBottom = '4px'; }); const summaryItemStrong = elementToPrint.querySelectorAll('.f1120-summary-box .f1120-summary-item strong'); summaryItemStrong.forEach(strong => { strong.style.color = '#555'; }); // Apply styles to total rows const totalTaxable = elementToPrint.querySelector('.f1120-total-taxable'); if(totalTaxable) { totalTaxable.style.fontWeight = 'bold'; totalTaxable.style.marginTop = '15px'; totalTaxable.style.paddingTop = '8px'; totalTaxable.style.borderTop = '2px solid #007bff'; } const totalTax = elementToPrint.querySelector('.f1120-total-tax'); if(totalTax) { totalTax.style.fontWeight = 'bold'; totalTax.style.marginTop = '15px'; totalTax.style.paddingTop = '8px'; totalTax.style.borderTop = '2px solid #28a745'; } // Apply color classes for amounts const amountSpans = elementToPrint.querySelectorAll('.f1120-amount-positive, .f1120-amount-negative'); amountSpans.forEach(span => { if (span.classList.contains('f1120-amount-positive')) { span.style.color = '#28a745'; // Success green } else if (span.classList.contains('f1120-amount-negative')) { span.style.color = '#dc3545'; // Danger red } span.style.fontWeight = 'bold'; }); // Append cloned element to body temporarily for html2canvas document.body.appendChild(elementToPrint); try { const canvas = await html2canvas(elementToPrint, { scale: 2, // Increase scale for better resolution logging: false, // Disable logging useCORS: true // Enable CORS if images are involved (unlikely here) }); const imgData = canvas.toDataURL('image/png'); const pdf = new window.jspdf.jsPDF({ orientation: 'p', unit: 'mm', format: 'a4' }); const imgWidth = 210 - 20; // A4 width minus margins (10mm each side) const pageHeight = 297; // A4 height const imgHeight = canvas.height * imgWidth / canvas.width; let heightLeft = imgHeight; let position = 10; // Top margin pdf.addImage(imgData, 'PNG', 10, position, imgWidth, imgHeight); heightLeft -= pageHeight - 10; // Deduct height of the first page content while (heightLeft >= 0) { position = heightLeft - imgHeight + 10; // Calculate position for next page pdf.addPage(); pdf.addImage(imgData, 'PNG', 10, position, imgWidth, imgHeight); heightLeft -= pageHeight; } pdf.save('Corporate_Tax_Estimate_Summary.pdf'); } catch (error) { console.error('Error generating PDF:', error); alert('Could not generate PDF. Please try again.'); } finally { // Remove the temporary cloned element document.body.removeChild(elementToPrint); } }); // Trigger initial display in summary tab if needed (optional, decided against showing error on load) // document.querySelector('.f1120-tab-button[data-tab="summary"]').click(); });