A three-hundred-thousand-dollar purchase price is only the starting point for a monthly housing calculation. The down payment, loan terms and property's actual recurring expenses determine the payment and the household's wider budget. The example below shows transparent financing arithmetic without suggesting that a particular home is available at that amount.
What does the mortgage illustration include?
It uses the stated hypothetical price, several down payments and the published national thirty-year reference rate shown beside the table. The result is principal and interest only. It does not include property tax, homeowners insurance, mortgage insurance, association charges or maintenance. A lender's actual rate and costs depend on the proposed loan and borrower. Use the illustration to understand how borrowed principal changes, then request a written offer with the same property and financing assumptions.
Which local tax figure should you add?
Use the actual property's current bill and check the fiscal period, exemptions and other charges. The town examples below apply local rates to median assessments and are not tax quotes for a three-hundred-thousand-dollar purchase. A sale price should not automatically replace the assessment in that calculation. Ask the lender what tax amount supports the payment and escrow estimate, then reconcile it with the municipal record. Keep the estimate's source and date alongside the number.
Consumer Financial Protection Bureau: Loan Estimate explainer.
How do you decide whether the complete budget works?
Add a property-specific insurance quote, any mortgage-insurance amount and charges associated with the dwelling. Then include utilities, known maintenance and the household's other obligations. Compare cash retained after closing as well as the ongoing payment. A smaller down payment can preserve reserves while increasing borrowing and potentially changing financing costs. An inspection can identify early work that the monthly illustration does not capture. The useful result is a complete, documented budget for a real candidate, not a payment derived from the purchase price alone.
Consumer Financial Protection Bureau: private mortgage insurance.
How does the payment arithmetic work?
This illustration uses a hypothetical purchase price of $300,000 and Freddie Mac's national 30-year fixed average of 6.95% for the week of 2026-09-17.The price and down payments are scenarios, not homes offered for sale or promised loan terms.
Payment Illustrations
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Principal and interest only. Add property tax, insurance, any mortgage insurance, association charges, utilities and maintenance separately.
| Down Payment | Cash Down | Loan | Repayment Term | Monthly Principal + Interest |
|---|---|---|---|---|
| 5% | $15,000 | $285,000 | 30 years | $1,887 |
| 10% | $30,000 | $270,000 | 30 years | $1,787 |
| 20% | $60,000 | $240,000 | 30 years | $1,589 |
What These Columns Mean
- Down Payment
- Illustrative share of the assumed purchase price paid in cash.
- Cash Down
- Assumed price multiplied by the down-payment percentage; closing costs are additional.
- Loan
- Assumed purchase price less the cash down payment.
- Repayment Term
- Assumed fixed-rate amortization period.
- Monthly Principal + Interest
- Calculated fixed-rate payment, rounded to the nearest dollar. Excludes tax, insurance and other ownership expenses.
Cite: RE413. “Payment Illustrations.” Updated September 19, 2026. https://www.re413.com/news/300000-house-monthly-payment-western-mass/, underlying sources at https://www.re413.com/sources/.
What does the local record show?
These towns provide local context for the decision in this article. The figures describe the published records and survey periods identified below. Compare the same measures across places, then confirm the details of any actual home before using them in a budget or offer.
Local Figures for This Decision
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Selected municipalities, shown alphabetically. Definitions below distinguish assessments, administrative benchmarks and survey estimates from current market quotes.
| Town | Single-family Assessment | Annual Tax Illustration | Residential Tax Rate |
|---|---|---|---|
| Greenfield | $264,600 | $4,963 | $18.64 |
| Pittsfield | $256,500 | $4,516 | $17.50 |
| Springfield | $267,900 | $4,181 | $15.46 |
What These Columns Mean
- Town
- Municipality; follow its record below for the full data and address check.
- Single-family Assessment
- Median assessed value of single-family parcels. This is a tax-roll statistic, not an asking price, appraisal or median sale price. Assessment years are identified in the sources.
- Annual Tax Illustration
- The published residential rate applied to the town's median single-family assessment, including the recorded community preservation surcharge and its general first-value exemption where adopted. Individual exemptions, special assessments and a future reassessment can change an actual bill.
- Residential Tax Rate
- Dollars per $1,000 of taxable assessed value. The fiscal year is identified below. The rate alone does not include a community preservation surcharge or determine a particular property's bill.
Cite: RE413. “Local Figures for This Decision.” Updated September 19, 2026. https://www.re413.com/news/300000-house-monthly-payment-western-mass/, underlying sources at https://www.re413.com/sources/.
Greenfield's town record. Single-family assessment: $264,600. Annual tax illustration: $4,963. Residential tax rate: $18.64.
Pittsfield's town record. Single-family assessment: $256,500. Annual tax illustration: $4,516. Residential tax rate: $17.50.
Springfield's town record. Single-family assessment: $267,900. Annual tax illustration: $4,181. Residential tax rate: $15.46.
What should you check next?
- Replace the reference-rate illustration with a written lender quote for the intended loan and property.
- Add actual taxes, insurance, mortgage insurance and any association charges without using purchase price as an automatic assessment.
- Keep closing cash and repair reserves separate while testing the full recurring household budget.
Keep the address, document date and source alongside each answer. If records disagree, identify which period and property each describes before treating the difference as a change. A missing result leaves a question open; it does not establish that a property has no problem or no cost.
Where can you continue the comparison?
- A five-hundred-thousand-dollar illustration
- Understanding the tax component
- Comparing down-payment amounts
Browse all housing guides by subject.
Open the linked town records for the wider context, including sources and dates. Use the property-specific records to narrow a decision, and keep current quotes separate from the historical figures used to explain it here.
Which official guidance supports this article?
- Consumer Financial Protection Bureau: Loan Estimate explainer. Guidance checked 2026-09-05; confirm current requirements for your transaction.
- Consumer Financial Protection Bureau: private mortgage insurance. Guidance checked 2026-09-05; confirm current requirements for your transaction.
Sources
- MassGIS and municipal assessors. single-family assessment, annual tax illustration. Figures through Greenfield: FY2025; Pittsfield: FY2025; Springfield: FY2026. Checked 2026-08-21.
- Massachusetts Department of Revenue, Division of Local Services. annual tax illustration, residential tax rate. Figures through Greenfield: FY2026; Pittsfield: FY2026; Springfield: FY2026. Checked 2026-08-05.
- Massachusetts Department of Revenue, community preservation records. annual tax illustration. Checked 2026-08-05.
- Freddie Mac, Primary Mortgage Market Survey. National 30-year fixed mortgage rate used for the labelled payment illustration. Figures through 2026-09-17. Checked 2026-09-18.
"Figures through" is the period the publisher's data describes; "checked" is only when we last asked. The full sourcing: sources and method.