function calculate() {
  //const gross = parseFloat(document.getElementById('grossPay').value) || 0;
  const freq = parseInt(document.getElementById('payFreq').value);
  const gross = (parseFloat(document.getElementById('payCheck').value) * freq) || 0;
  const status = document.getElementById('filingStatus').value;
  const stateCode = document.getElementById('state').value;
  const retPct = parseFloat(document.getElementById('retPct').value) / 100;
  const preTax = (parseFloat(document.getElementById('preTaxPay').value) || 0) * freq;
  const postTax = (parseFloat(document.getElementById('postTaxPay').value) || 0) * freq;
  const other = (parseFloat(document.getElementById('otherPay').value) || 0) * freq;
  const cityPct = (parseFloat(document.getElementById('cityTax').value) / 100) || 0;

  const stdDed = STD_DEDUCTIONS[status];
  document.getElementById('stdDedLabel').textContent = '$' + stdDed.toLocaleString();

  const retirement = gross * retPct;
  const preTaxTotal = retirement + preTax;
  const fedtaxable = Math.max(0, gross - stdDed - preTaxTotal);
  const taxable = Math.max(0, gross - preTaxTotal);

  const fed = calcBracketTax(fedtaxable, FED_BRACKETS[status]);
  const ss = Math.min(gross, SS_BASE) * SS_RATE;
  const med = gross * MED_RATE;
  const addMed = gross > ADD_MED_THRESH[status] ? (gross - ADD_MED_THRESH[status]) * 0.009 : 0;
  const fica = ss + med + addMed;
  const stTax = calcStateTax(taxable, stateCode);
  const ctTax = Math.max(0,taxable * cityPct);
  const totalTax = fed + fica + stTax + ctTax;
  const totalDeductions = preTaxTotal + postTax + other + totalTax;
  const net = gross - totalDeductions;
  const netPer = net / freq;

  currentData = { gross, retPct, retirement, preTax, preTaxTotal, postTax, other, fed, ss, med, addMed, fica, stTax, ctTax, totalTax, net, netPer, taxable, stdDed, freq, status, stateCode };
  renderResults(currentData);
}