diff --git a/app/interactives/compounding-frequency-calculator/page.tsx b/app/interactives/compounding-frequency-calculator/page.tsx
index 202f7a4..d795bbc 100644
--- a/app/interactives/compounding-frequency-calculator/page.tsx
+++ b/app/interactives/compounding-frequency-calculator/page.tsx
@@ -260,25 +260,29 @@ export default function CompoundInterestCalculator() {
                   type="text"
                   value={initialAmount}
                   onChange={(e) => {
-                    const input = e.target.value;
-                    const numericPart = input.replace(/[^0-9.]/g, "");
-                    const numericValue = parseFloat(numericPart);
+                    const raw = e.target.value;
+                    const numericValue = parseFloat(raw);
+                    if (raw === "") {
+                      setInitialAmountError("");
+                      setInitialAmount("");
+                      return;
+                    }
                     if (
                       !isNaN(numericValue) &&
-                      numericValue > MAX_INITIAL_AMOUNT
+                      (numericValue < 0 || numericValue > MAX_INITIAL_AMOUNT)
                     ) {
                       setInitialAmountError(
                         "Enter an amount between $0 and $100,000,000.",
                       );
-                      setInitialAmount(numericPart);
+                      setInitialAmount(raw);
                     } else {
                       setInitialAmountError("");
-                      setInitialAmount(numericPart);
+                      setInitialAmount(raw);
                     }
-                    flagSkippedFields("initialAmount")
+                    flagSkippedFields("initialAmount");
                   }}
                   onBlur={() => {
-                    flagSkippedFields("initialAmount")
+                    flagSkippedFields("initialAmount");
                     if (initialAmount.startsWith("."))
                       setInitialAmount("0" + initialAmount);
                     if (!initialAmount)
@@ -317,26 +321,30 @@ export default function CompoundInterestCalculator() {
               <div className="relative">
                 <Input
                   id="annual-rate"
-                  type="text"
+                  type="number"
                   value={annualRate}
                   onChange={(e) => {
-                    const input = e.target.value;
-                    const numericPart = input.replace(/[^0-9.]/g, "");
-                    const numericValue = parseFloat(numericPart);
+                    const raw = e.target.value;
+                    const numericValue = parseFloat(raw);
+                    if (raw === "") {
+                      setAnnualRateError("");
+                      setAnnualRate("");
+                      return;
+                    }
                     if (
                       !isNaN(numericValue) &&
-                      numericValue > MAX_ANNUAL_RATE
+                      (numericValue < 0 || numericValue > MAX_ANNUAL_RATE)
                     ) {
                       setAnnualRateError("Enter a rate between 0% and 1,000%.");
-                      setAnnualRate(numericPart);
+                      setAnnualRate(raw);
                     } else {
                       setAnnualRateError("");
-                      setAnnualRate(numericPart);
+                      setAnnualRate(raw);
                     }
-                    flagSkippedFields("annualRate")
+                    flagSkippedFields("annualRate");
                   }}
                   onBlur={() => {
-                    flagSkippedFields("annualRate")
+                    flagSkippedFields("annualRate");
                     if (annualRate.startsWith("."))
                       setAnnualRate("0" + annualRate);
                     if (!annualRate)
@@ -393,20 +401,20 @@ export default function CompoundInterestCalculator() {
 
                     setPeriods(cleaned);
 
-                    if (cleaned !== "" && (Number(cleaned) < 0 || Number(cleaned) > maxPeriods)) {
+                    if (
+                      cleaned !== "" &&
+                      (Number(cleaned) < 0 || Number(cleaned) > maxPeriods)
+                    ) {
                       setPeriodsError(
                         buildPeriodsRangeError(selectedCompounding, maxPeriods),
                       );
                     } else {
                       setPeriodsError("");
                     }
-                    flagSkippedFields("periods")
-                  }}
-                  onKeyDown={(e) => {
-                    if (e.key === "-" || e.key === "e") e.preventDefault();
+                    flagSkippedFields("periods");
                   }}
                   onBlur={() => {
-                    flagSkippedFields("periods")
+                    flagSkippedFields("periods");
                     if (periods.startsWith(".")) setPeriods("0" + periods);
                     if (!periods)
                       setTimeout(
diff --git a/app/interactives/present-value-calculator-v2/page.tsx b/app/interactives/present-value-calculator-v2/page.tsx
index ca6c3d6..d97aa82 100644
--- a/app/interactives/present-value-calculator-v2/page.tsx
+++ b/app/interactives/present-value-calculator-v2/page.tsx
@@ -58,7 +58,7 @@ function buildPeriodsRangeError(compounding: CompoundingFrequency, max: number):
   const maxFormatted = max.toLocaleString("en-US")
   const base = `Enter a number of ${label} between 0 and ${maxFormatted}.`
   if (compounding === "annually") return base
-  return `${base} (${maxFormatted} periods = 100 years with ${freqLabels[compounding]} compounding).`
+  return `${base} (${maxFormatted} ${label} = 100 years with ${freqLabels[compounding]} compounding).`
 }
 
 // Prevents -0 from displaying in results (e.g. when future value equals present value).
@@ -296,7 +296,7 @@ export default function PresentValueCalculator() {
                             setTimeout(
                               () =>
                                 setFutureValueError(
-                                  "Please enter a future value to calculate.",
+                                  "Please enter a future value.",
                                 ),
                               150,
                             );