Plan upgrades by modeling compute, storage, and bandwidth. Add taxes, credits, and onetime migration fees. See totals fast, export files, and share decisions easily.
| Scenario | Current monthly total | Target monthly total | One-time fees | Typical reason |
|---|---|---|---|---|
| Growing store | $48.00 | $82.00 | $40.00 | Traffic spikes require extra compute and bandwidth. |
| Media site | $65.00 | $105.00 | $75.00 | More storage, backups, and monitoring for uptime. |
| API service | $92.00 | $140.00 | $120.00 | Security, support, and redundancy for SLAs. |
CPU saturation above 70% for 15 minutes and memory use above 80% often trigger latency spikes. If bandwidth exceeds 80% of the included quota, overage rates can add 10–25% to a monthly bill. Storage growth is another signal: moving from 200 GB to 500 GB at $0.08/GB adds $24 monthly. Mirror your invoice in the line items, then compare current versus target totals. Include monitoring, security, and license fees, since small add-ons commonly represent 8–15% of final totals.
Mid‑cycle upgrades rarely start at zero. Unused credit is (current cycle total ÷ cycle days) × remaining days, and the target charge uses the same proration. The calculator assumes 30 days for monthly cycles and 365 for annual, which matches many providers. If your portal uses a different day count, enter the exact remaining days to reduce variance. One‑time fees are added after proration.
Promotions reduce the target subtotal first, then the contingency buffer increases it to reflect risk. A 10% promo and 5% buffer yields 0.90 × 1.05 = 0.945 of the original subtotal, a net 5.5% reduction. Annual billing discounts apply to the full cycle total; a 15% annual discount on a $120/month target reduces the year to $1,224. Apply recurring tax when it is charged on subscription invoices.
If you expect usage growth, the projection treats target monthly cost as a geometric series. A 2% monthly growth over 12 months multiplies the first month by ( (1.02^12 − 1) ÷ 0.02 ) ≈ 13.4. This helps compare “do nothing” versus “upgrade now” on the same horizon. For bursty traffic, keep growth at 0% and place risk in contingency.
Use the due‑now figure for purchase approval and the monthly change for runway planning. Attach the CSV for line‑item transparency and the PDF for a shareable summary. Capture assumptions like included bandwidth, backup retention days, and support response times so stakeholders understand what drives the delta. If due‑now is large, schedule cutover near cycle end to minimize proration impact.
Use the days left in your current billing period from your provider dashboard. If you are unsure, use 30 for monthly or 365 for annual to estimate a full-cycle change.
It applies the promo discount to the target monthly subtotal, then increases the discounted amount by the contingency percentage to reflect risk and unplanned usage.
Due now can include one-time migration or setup fees plus pro-rated differences for the remaining days in your billing cycle, and any selected taxes.
Yes. Select annual billing, then set the annual discount percentages for current and target plans. The calculator applies the discount to the full 12-month cycle total.
Use your typical month-over-month usage increase for compute, storage, or bandwidth. If growth is irregular, set growth to 0% and use a contingency buffer instead.
Exports include only the values you enter and the computed totals. Remove internal notes, tenant names, or proprietary rate cards before sharing outside your organization.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.