{"id":373,"date":"2015-06-10T09:31:38","date_gmt":"2015-06-10T07:31:38","guid":{"rendered":"http:\/\/wpcalc.com\/?p=373"},"modified":"2026-09-30T19:54:36","modified_gmt":"2026-09-30T16:54:36","slug":"monthly-investment-savings","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/finance\/monthly-investment-savings\/","title":{"rendered":"Monthly Investment Savings Calculator"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Monthly Contribution for Investment Goal Calculator<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"373\" data-favorite-title=\"Monthly Investment Savings\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/finance\/monthly-investment-savings\/\" data-favorite-excerpt=\"Calculate how much you need to invest each month to reach a future savings goal. Enter your target amount, expected annual interest rate, and time horizon to get the required monthly contribution.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-loan\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/finance\/monthly-investment-savings\/\" method=\"POST\" class=\"calculator\" id=\"calculator-373\" data-post=\"373\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Desired Future Amount (F)<\/label><div class=\"term\">F<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"desired_future_amount_f\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"100000\"\/><div class=\"unit\" id=\"calc-unit-1\">$<\/div><small id=\"calc-info-1\">Enter the future amount you want to save<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Annual Interest Rate<\/label><div class=\"term\">r<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"annual_interest_rate\" id=\"field-2\" aria-describedby=\"calc-unit-2 calc-info-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"6\"\/><div class=\"unit\" id=\"calc-unit-2\">%<\/div><small id=\"calc-info-2\">Enter the expected annual interest rate<\/small><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-3\">Investment Period (Years)<\/label><div class=\"term\">n<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"investment_period_years\" id=\"field-3\" aria-describedby=\"calc-unit-3 calc-info-3\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"1\" value=\"10\"\/><div class=\"unit\" id=\"calc-unit-3\">years<\/div><small id=\"calc-info-3\">Enter the investment period in years<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"373\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Required Monthly Investment<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"$\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copy link to this calculation<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"373\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Monthly Investment Savings Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ P = \\frac{F \\times r}{(1 + r)^n - 1} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(P\\) \u2014 required monthly investment (contribution)<\/li>\n<li>\\(F\\) \u2014 desired future amount (your savings goal)<\/li>\n<li>\\(r\\) \u2014 monthly interest rate (annual rate divided by 12)<\/li>\n<li>\\(n\\) \u2014 total number of monthly contributions (years \u00d7 12)<\/li>\n<\/ul>\n<p>This is the sinking-fund formula: it converts a future value goal into a fixed monthly payment, assuming contributions are made at the end of each month and earn compound interest at rate \\(r\\). If the interest rate is 0, the formula reduces to \\(P = F \/ n\\) \u2014 you simply divide the goal by the number of months.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Monthly Investment Savings \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> you want to have \\($100{,}000\\) in 10 years and expect an annual return of 6% compounded monthly.<\/p>\n<p>\\[ r = \\frac{6\\%}{12} = 0.005, \\quad n = 10 \\times 12 = 120 \\text{ months} \\]<\/p>\n<p>\\[ P = \\frac{100{,}000 \\times 0.005}{(1 + 0.005)^{120} - 1} = \\frac{500}{0.81940} \\approx 610.21 \\]<\/p>\n<p><strong>Result:<\/strong> you need to invest about <strong>\\($610.21\\) per month<\/strong>. Over 120 months you contribute \\($73{,}225\\) in total, and compound interest supplies the remaining \\($26{,}775\\).<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Calculator<\/h2>\n<ol>\n<li>Enter your <strong>Desired Future Amount (F)<\/strong> \u2014 the total sum you want to have at the end, in dollars.<\/li>\n<li>Enter the <strong>Annual Interest Rate<\/strong> you expect to earn, as a percentage (e.g. 6 for 6%).<\/li>\n<li>Enter the <strong>Investment Period (Years)<\/strong> \u2014 how long you plan to keep contributing.<\/li>\n<li>Read the <strong>Required Monthly Investment<\/strong> \u2014 the fixed amount you must set aside each month to hit your goal.<\/li>\n<\/ol>\n<h2>What Is a Monthly Investment Savings Plan?<\/h2>\n<p>A monthly investment savings plan is a strategy of depositing a fixed amount every month into an interest-bearing account or investment vehicle, such as an index fund, retirement account, or savings account. Because each contribution compounds over time, your money grows not only from what you deposit but also from the returns earned on earlier deposits. This calculator answers the key planning question in reverse: instead of asking \"how much will I have?\", it asks \"how much must I save each month to have exactly what I want?\"<\/p>\n<p>The math behind it is the sinking-fund formula, widely used in finance for retirement planning, building a house down payment, funding education, or reaching any large future target. The longer your time horizon and the higher your return, the smaller the required monthly amount \u2014 which is why starting early is one of the most powerful levers in personal finance. In the example above, waiting 10 years instead of 20 would roughly double the required contribution.<\/p>\n<p>When interpreting the result, remember that the answer is a fixed nominal amount. If your goal is a real (inflation-adjusted) target, you may want to increase contributions over time or set a slightly higher goal. To compare different scenarios, try changing the interest rate or period and observe how sensitive the required payment is \u2014 a 1\u20132 percentage point difference in expected returns can change the monthly amount by 10% or more.<\/p>\n<h2>Assumptions, Limitations and Practical Tips<\/h2>\n<ul>\n<li><strong>End-of-month contributions:<\/strong> the formula assumes each deposit is made at the end of the month. If you invest at the start of each month, the required amount is slightly lower.<\/li>\n<li><strong>Constant rate:<\/strong> the calculator assumes a fixed annual rate converted to a monthly rate by dividing by 12. Real investment returns fluctuate year to year, so treat the result as an estimate, not a guarantee.<\/li>\n<li><strong>No taxes or fees:<\/strong> management fees, transaction costs, and taxes on gains or withdrawals are not included. Use a net expected return to be more realistic.<\/li>\n<li><strong>No inflation adjustment:<\/strong> \\($100{,}000\\) in 10 years will buy less than \\($100{,}000\\) today. Consider raising your target accordingly.<\/li>\n<li><strong>Round up:<\/strong> contributing slightly more than the calculated minimum gives you a buffer against lower-than-expected returns.<\/li>\n<\/ul>\n<p>For related planning, see our <a href=\"https:\/\/wpcalc.com\/en\/finance\/retirement-planner\/\">Retirement Planner<\/a> to test whether your savings rate meets a retirement income goal, the <a href=\"https:\/\/wpcalc.com\/en\/finance\/return-on-investment\/\">Return on Investment<\/a> calculator to evaluate expected returns, and the <a href=\"https:\/\/wpcalc.com\/en\/finance\/investment-payment\/\">Investment Payment<\/a> calculator to see how a given monthly payment grows over time.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calculate how much you need to invest each month to reach a future savings goal. Enter your target amount, expected annual interest rate, and time horizon to get the required monthly contribution.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[30],"class_list":["post-373","post","type-post","status-publish","format-standard","hentry","category-finance","tag-mortgage"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=373"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/373\/revisions"}],"predecessor-version":[{"id":66135,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/373\/revisions\/66135"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}